Hadoop, mail # user - Re: help to fix this issue

help to fix this issue

newbie24 2012-03-07, 13:10

Hi,

I'm new to hadoop.

I'm trying to connect to hbase and accessing these records but I get this
issue..
2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
for server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
   at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
   at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
   at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening socket
connection to server localhost/127.0.0.1:2181
2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
for server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused
   at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
   at
sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
   at
org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening socket
connection to server localhost/127.0.0.1:2181
2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
for server null, unexpected error, closing socket connection and attempting
reconnect
java.net.ConnectException: Connection refused

**********************

When I access base and try to list the entries this is what I see..
ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
to connect to ZooKeeper but the connection closes immediately. This could be
a sign that the server has too many connections (30 is the default).
Consider inspecting your ZK server logs for that error and then make sure
you are reusing HBaseConfiguration as often as you can. See HTable's javadoc
for more information.
Can someone please help me...

Thanks
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Re: help to fix this issue

tousif 2012-03-07, 13:16

did you add these conf properties in hbase site xml???

<property>
   <name>hbase.rootdir</name>
   <value>hdfs://address:54310/hbase</value>
  </property>
  <property>
   <name>dfs.replication</name>
   <value>2</value>
   <description>The replication count for HLog and HFile storage. Should
not be greater than HDFS datanode count.
   </description>
  </property>

  <property>
   <name>hbase.cluster.distributed</name>
   <value>true</value>
   <description>The mode the cluster will be in. Possible values are
   false: standalone and pseudo-distributed setups with managed Zookeeper
   true: fully-distributed with unmanaged Zookeeper Quorum (see
hbase-env.sh)
   </description>
  </property>

  <property>
   <name>hbase.zookeeper.quorum</name>
   <value>ipaddress</value>
  </property>

On Wed, Mar 7, 2012 at 6:40 PM, newbie24 <[EMAIL PROTECTED]> wrote:

>
> Hi,
>
> I'm new to hadoop.
>
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
>
>
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and attempting
> reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket
> connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and attempting
> reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket
> connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and attempting
> reconnect
> java.net.ConnectException: Connection refused
>
> **********************
>
> When I access base and try to list the entries this is what I see..
>
>
> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
> to connect to ZooKeeper but the connection closes immediately. This could
> be
> a sign that the server has too many connections (30 is the default).
> Consider inspecting your ZK server logs for that error and then make sure
> you are reusing HBaseConfiguration as often as you can. See HTable's
> javadoc
> for more information.
>
>
> Can someone please help me...
>
> Thanks
> --
> View this message in context:
> http://old.nabble.com/help-to-fix-this-issue-tp33457865p33457865.html
> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>
>
--
Regards
Tousif
+918050227279

Re: help to fix this issue

newbie24 2012-03-07, 13:20

Than much,..

So this is what I have in my base -site xml file

<configuration>
  <property>
   <name>hbase.rootdir</name>
   <value>hdfs://sodium.nms.fnc.fujitsu.com:9000/hbase</value>
  </property>
  <property>
   <name>dfs.replication</name>
   <value>1</value>
   <description>The replication count for HLog and HFile storage.
Should not be greater than HDFS datanode count.
   </description>
  </property>
  <property>
   <name>hbase.cluster.distributed</name>
   <value>true</value>
   <description>The mode the cluster will be in. Possible values are
   false: standalone and pseudo-distributed setups with managed Zookeeper
   true: fully-distributed with unmanaged Zookeeper Quorum (see
hbase-env.sh)
   </description>
  </property>
  <property>
   <name>hbase.hregion.max.filesize</name>
   <value>536870912</value>
  </property>
  <property>
   <name>zookeeper.quorum</name>
   <value>sodium.nms.fnc.fujitsu.com</value>
   <description>Property from ZooKeeper's config zoo.cfg.
   The port at which the clients will connect.
   </description>
  </property>
  <property>
   <name>hbase.zookeeper.property.clientPort</name>
   <value>2181</value>
   <description>Property from ZooKeeper's config zoo.cfg.
   The port at which the clients will connect.
   </description>
  </property>
  <property>
   <name>hbase.zookeeper.property.dataDir</name>
   <value>/scratch/sramesh/alpine1.0/zookeeper/data</value>
   <description>Property from ZooKeeper's config zoo.cfg.
   The directory where the snapshot is stored.
   </description>
  </property>
  <property>
   <name>hbase.zookeeper.property.tickTime</name>
   <value>2000</value>
   <description>Property from ZooKeeper's config zoo.cfg.
   The port at which the clients will connect.
   </description>
Is this correct?

Thanks

newbie24 wrote:
>
> Hi,
>
> I'm new to hadoop.
>
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
>
>
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
>
> **********************
>
> When I access base and try to list the entries this is what I see..
>
>
> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
> to connect to ZooKeeper but the connection closes immediately. This could
> be a sign that the server has too many connections (30 is the default).
> Consider inspecting your ZK server logs for that error and then make sure
> you are reusing HBaseConfiguration as often as you can. See HTable's
> javadoc for more information.
>
>
> Can someone please help me...
>
> Thanks
>

--
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Re: help to fix this issue

tousif 2012-03-07, 13:24

did you comment export HBASE_MANAGES_ZK=true in hbase_env.sh??

On Wed, Mar 7, 2012 at 6:50 PM, newbie24 <[EMAIL PROTECTED]> wrote:

>
> Than much,..
>
> So this is what I have in my base -site xml file
>
> <configuration>
> <property>
> <name>hbase.rootdir</name>
> <value>hdfs://sodium.nms.fnc.fujitsu.com:9000/hbase</value>
> </property>
> <property>
> <name>dfs.replication</name>
> <value>1</value>
> <description>The replication count for HLog and HFile storage.
> Should not be greater than HDFS datanode count.
> </description>
> </property>
> <property>
> <name>hbase.cluster.distributed</name>
> <value>true</value>
> <description>The mode the cluster will be in. Possible values are
> false: standalone and pseudo-distributed setups with managed Zookeeper
> true: fully-distributed with unmanaged Zookeeper Quorum (see
> hbase-env.sh)
> </description>
> </property>
> <property>
> <name>hbase.hregion.max.filesize</name>
> <value>536870912</value>
> </property>
> <property>
> <name>zookeeper.quorum</name>
> <value>sodium.nms.fnc.fujitsu.com</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.clientPort</name>
> <value>2181</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.dataDir</name>
> <value>/scratch/sramesh/alpine1.0/zookeeper/data</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The directory where the snapshot is stored.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.tickTime</name>
> <value>2000</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
>
>
> Is this correct?
>
> Thanks
>
>
>
> newbie24 wrote:
> >
> > Hi,
> >
> > I'm new to hadoop.
> >
> > I'm trying to connect to hbase and accessing these records but I get this
> > issue..
> >
> >
> > 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at
> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> > socket connection to server localhost/127.0.0.1:2181
> > 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at
> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> > socket connection to server localhost/127.0.0.1:2181
> > 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> >
> > **********************
> >
> > When I access base and try to list the entries this is what I see..
> >
> >
> > ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is
> able
> > to connect to ZooKeeper but the connection closes immediately. This could
> > be a sign that the server has too many connections (30 is the default).
Regards
Tousif
+918050227279

Re: help to fix this issue

tousif 2012-03-07, 13:49

you need to add this property

<property>
   <name>hbase.zookeeper.quorum</name>
   <value>ipaddress</value>
  </property>

On Wed, Mar 7, 2012 at 7:17 PM, shripriya devarajan
<[EMAIL PROTECTED]>wrote:

> Thanks much...
>
> But this is what i have in my base xml...
>
> <configuration>
> <property>
> <name>hbase.rootdir</name>
> <value>hdfs://sodium.nms.fnc.fujitsu.com:9000/hbase</value>
> </property>
> <property>
> <name>dfs.replication</name>
> <value>1</value>
> <description>The replication count for HLog and HFile
> storage. Should not be greater than HDFS datanode count.
> </description>
> </property>
> <property>
> <name>hbase.cluster.distributed</name>
> <value>true</value>
> <description>The mode the cluster will be in. Possible values are
> false: standalone and pseudo-distributed setups with managed
> Zookeeper
> true: fully-distributed with unmanaged Zookeeper Quorum (see
> hbase-env.sh)
> </description>
> </property>
> <property>
> <name>hbase.hregion.max.filesize</name>
> <value>536870912</value>
> </property>
> <property>
> <name>zookeeper.quorum</name>
> <value>sodium.nms.fnc.fujitsu.com</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.clientPort</name>
> <value>2181</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.dataDir</name>
> <value>/scratch/sramesh/alpine1.0/zookeeper/data</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The directory where the snapshot is stored.
> </description>
> </property>
> <property>
> <name>hbase.zookeeper.property.tickTime</name>
> <value>2000</value>
> <description>Property from ZooKeeper's config zoo.cfg.
> The port at which the clients will connect.
> </description>
> </property>
>
>
> Is this correct.
>
> Please let me know.
>
> thanks
>
>
>
> ------------------------------
> Date: Wed, 7 Mar 2012 18:46:56 +0530
> Subject: Re: help to fix this issue
> From: [EMAIL PROTECTED]
> To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
> CC: [EMAIL PROTECTED]
>
>
> did you add these conf properties in hbase site xml???
>
> <property>
> <name>hbase.rootdir</name>
> <value>hdfs://address:54310/hbase</value>
> </property>
> <property>
> <name>dfs.replication</name>
> <value>2</value>
> <description>The replication count for HLog and HFile storage. Should
> not be greater than HDFS datanode count.
> </description>
> </property>
>
> <property>
> <name>hbase.cluster.distributed</name>
> <value>true</value>
> <description>The mode the cluster will be in. Possible values are
> false: standalone and pseudo-distributed setups with managed
> Zookeeper
> true: fully-distributed with unmanaged Zookeeper Quorum (see
> hbase-env.sh)
> </description>
> </property>
>
> <property>
> <name>hbase.zookeeper.quorum</name>
> <value>ipaddress</value>
> </property>
>
>
>
> On Wed, Mar 7, 2012 at 6:40 PM, newbie24 <[EMAIL PROTECTED]> wrote:
>
>
> Hi,
>
> I'm new to hadoop.
>
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
>
>
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and attempting
> reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
Regards
Tousif
+918050227279

Re: help to fix this issue

newbie24 2012-03-07, 14:20

Is there a way to close all the existing connections in hadoop?

Please let me know.
newbie24 wrote:
>
> Hi,
>
> I'm new to hadoop.
>
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
>
>
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
>
> **********************
>
> When I access base and try to list the entries this is what I see..
>
>
> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
> to connect to ZooKeeper but the connection closes immediately. This could
> be a sign that the server has too many connections (30 is the default).
> Consider inspecting your ZK server logs for that error and then make sure
> you are reusing HBaseConfiguration as often as you can. See HTable's
> javadoc for more information.
>
>
> Can someone please help me...
>
> Thanks
>

--
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Re: help to fix this issue

newbie24 2012-03-07, 14:20

Is there a way to close all the existing connections in hadoop?

Please let me know.
newbie24 wrote:
>
> Hi,
>
> I'm new to hadoop.
>
> I'm trying to connect to hbase and accessing these records but I get this
> issue..
>
>
> 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
> at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> at
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> at
> org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> socket connection to server localhost/127.0.0.1:2181
> 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> for server null, unexpected error, closing socket connection and
> attempting reconnect
> java.net.ConnectException: Connection refused
>
> **********************
>
> When I access base and try to list the entries this is what I see..
>
>
> ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is able
> to connect to ZooKeeper but the connection closes immediately. This could
> be a sign that the server has too many connections (30 is the default).
> Consider inspecting your ZK server logs for that error and then make sure
> you are reusing HBaseConfiguration as often as you can. See HTable's
> javadoc for more information.
>
>
> Can someone please help me...
>
> Thanks
>

--
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Re: help to fix this issue

tousif 2012-03-07, 14:42

check your etc/hosts file.. both localhost and your host might be
pointing to same.

On Wed, Mar 7, 2012 at 7:50 PM, newbie24 <[EMAIL PROTECTED]> wrote:

>
> Is there a way to close all the existing connections in hadoop?
>
> Please let me know.
>
>
>
>
> newbie24 wrote:
> >
> > Hi,
> >
> > I'm new to hadoop.
> >
> > I'm trying to connect to hbase and accessing these records but I get this
> > issue..
> >
> >
> > 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at
> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> > socket connection to server localhost/127.0.0.1:2181
> > 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > at
> > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > at
> > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> > socket connection to server localhost/127.0.0.1:2181
> > 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session 0x0
> > for server null, unexpected error, closing socket connection and
> > attempting reconnect
> > java.net.ConnectException: Connection refused
> >
> > **********************
> >
> > When I access base and try to list the entries this is what I see..
> >
> >
> > ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is
> able
> > to connect to ZooKeeper but the connection closes immediately. This could
> > be a sign that the server has too many connections (30 is the default).
> > Consider inspecting your ZK server logs for that error and then make sure
> > you are reusing HBaseConfiguration as often as you can. See HTable's
> > javadoc for more information.
> >
> >
> > Can someone please help me...
> >
> > Thanks
> >
>
> --
> View this message in context:
> http://old.nabble.com/help-to-fix-this-issue-tp33457865p33458308.html
> Sent from the Hadoop core-user mailing list archive at Nabble.com.
>
>
--
Regards
Tousif
+918050227279

Re: help to fix this issue

anil gupta 2012-03-07, 16:51

Hi,

Are you able to access and perform CRUD operation through HBase shell
properly? If yes, then please remove the 127.0.0.1 i.e localhost entries
from /etc/hosts file across the cluster. Restart the cluster and things
would be fine.
Thanks,
Anil

On Wed, Mar 7, 2012 at 6:42 AM, tousif <[EMAIL PROTECTED]> wrote:

> check your etc/hosts file.. both localhost and your host might be
> pointing to same.
>
> On Wed, Mar 7, 2012 at 7:50 PM, newbie24 <[EMAIL PROTECTED]> wrote:
>
> >
> > Is there a way to close all the existing connections in hadoop?
> >
> > Please let me know.
> >
> >
> >
> >
> > newbie24 wrote:
> > >
> > > Hi,
> > >
> > > I'm new to hadoop.
> > >
> > > I'm trying to connect to hbase and accessing these records but I get
> this
> > > issue..
> > >
> > >
> > > 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session
> 0x0
> > > for server null, unexpected error, closing socket connection and
> > > attempting reconnect
> > > java.net.ConnectException: Connection refused
> > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > > at
> > > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > > at
> > > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > > 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> > > socket connection to server localhost/127.0.0.1:2181
> > > 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session
> 0x0
> > > for server null, unexpected error, closing socket connection and
> > > attempting reconnect
> > > java.net.ConnectException: Connection refused
> > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > > at
> > > sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > > at
> > > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > > 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> > > socket connection to server localhost/127.0.0.1:2181
> > > 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session
> 0x0
> > > for server null, unexpected error, closing socket connection and
> > > attempting reconnect
> > > java.net.ConnectException: Connection refused
> > >
> > > **********************
> > >
> > > When I access base and try to list the entries this is what I see..
> > >
> > >
> > > ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is
> > able
> > > to connect to ZooKeeper but the connection closes immediately. This
> could
> > > be a sign that the server has too many connections (30 is the default).
> > > Consider inspecting your ZK server logs for that error and then make
> sure
> > > you are reusing HBaseConfiguration as often as you can. See HTable's
> > > javadoc for more information.
> > >
> > >
> > > Can someone please help me...
> > >
> > > Thanks
> > >
> >
> > --
> > View this message in context:
> > http://old.nabble.com/help-to-fix-this-issue-tp33457865p33458308.html
> > Sent from the Hadoop core-user mailing list archive at Nabble.com.
> >
> >
>
>
> --
> Regards
> Tousif
> +918050227279
>

--
Thanks & Regards,
Anil Gupta

Re: help to fix this issue

Subir S 2012-03-08, 05:54

Did this work for you @newbie?

On Wed, Mar 7, 2012 at 10:21 PM, anil gupta <[EMAIL PROTECTED]> wrote:

> Hi,
>
> Are you able to access and perform CRUD operation through HBase shell
> properly? If yes, then please remove the 127.0.0.1 i.e localhost entries
> from /etc/hosts file across the cluster. Restart the cluster and things
> would be fine.
>
>
> Thanks,
> Anil
>
> On Wed, Mar 7, 2012 at 6:42 AM, tousif <[EMAIL PROTECTED]> wrote:
>
> > check your etc/hosts file.. both localhost and your host might be
> > pointing to same.
> >
> > On Wed, Mar 7, 2012 at 7:50 PM, newbie24 <[EMAIL PROTECTED]> wrote:
> >
> > >
> > > Is there a way to close all the existing connections in hadoop?
> > >
> > > Please let me know.
> > >
> > >
> > >
> > >
> > > newbie24 wrote:
> > > >
> > > > Hi,
> > > >
> > > > I'm new to hadoop.
> > > >
> > > > I'm trying to connect to hbase and accessing these records but I get
> > this
> > > > issue..
> > > >
> > > >
> > > > 2012-03-06 16:56:03,923 WARN org.apache.zookeeper.ClientCnxn: Session
> > 0x0
> > > > for server null, unexpected error, closing socket connection and
> > > > attempting reconnect
> > > > java.net.ConnectException: Connection refused
> > > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > > > at
> > > >
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > > > at
> > > > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > > > 2012-03-06 16:56:05,782 INFO org.apache.zookeeper.ClientCnxn: Opening
> > > > socket connection to server localhost/127.0.0.1:2181
> > > > 2012-03-06 16:56:05,783 WARN org.apache.zookeeper.ClientCnxn: Session
> > 0x0
> > > > for server null, unexpected error, closing socket connection and
> > > > attempting reconnect
> > > > java.net.ConnectException: Connection refused
> > > > at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
> > > > at
> > > >
> sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:567)
> > > > at
> > > > org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1119)
> > > > 2012-03-06 16:56:07,569 INFO org.apache.zookeeper.ClientCnxn: Opening
> > > > socket connection to server localhost/127.0.0.1:2181
> > > > 2012-03-06 16:56:07,570 WARN org.apache.zookeeper.ClientCnxn: Session
> > 0x0
> > > > for server null, unexpected error, closing socket connection and
> > > > attempting reconnect
> > > > java.net.ConnectException: Connection refused
> > > >
> > > > **********************
> > > >
> > > > When I access base and try to list the entries this is what I see..
> > > >
> > > >
> > > > ERROR: org.apache.hadoop.hbase.ZooKeeperConnectionException: HBase is
> > > able
> > > > to connect to ZooKeeper but the connection closes immediately. This
> > could
> > > > be a sign that the server has too many connections (30 is the
> default).
> > > > Consider inspecting your ZK server logs for that error and then make
> > sure
> > > > you are reusing HBaseConfiguration as often as you can. See HTable's
> > > > javadoc for more information.
> > > >
> > > >
> > > > Can someone please help me...
> > > >
> > > > Thanks
> > > >
> > >
> > > --
> > > View this message in context:
> > > http://old.nabble.com/help-to-fix-this-issue-tp33457865p33458308.html
> > > Sent from the Hadoop core-user mailing list archive at Nabble.com.
> > >
> > >
> >
> >
> > --
> > Regards
> > Tousif
> > +918050227279
> >
>
>
>
> --
> Thanks & Regards,
> Anil Gupta
>