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Accumulo >> mail # user >> My Accumulo 1.5.0 instance has no tablet servers


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Re: My Accumulo 1.5.0 instance has no tablet servers
To follow up on this, I think maybe the config should be
<name>dfs.datanode.synconclose<name>, not <name>dfs.data.synconclose<name>.
Was that a typo, Eric?

Thanks,
Adam

On Thu, Sep 12, 2013 at 2:31 PM, Eric Newton <[EMAIL PROTECTED]> wrote:

> Add:
>
>   <property>
>       <name>dfs.support.append</name>
>       <value>true</value>
>   </property>
>   <property>
>       <name>dfs.data.synconclose</name>
>       <value>true</value>
>   </property>
>
> To hdfs-site.xml in your hadoop configuration.
>
> -Eric
>
>
>
> On Thu, Sep 12, 2013 at 2:27 PM, Pete Carlson <[EMAIL PROTECTED]> wrote:
>
>> Ok, so now that I have an Accumulo monitor I discovered that my Accumulo
>> instance doesn't have any tablet servers.
>>
>> Here is what I tried so far to resolve the issue:
>>
>> 1) Looked in the tserver_localhost.localdomain.log file, and found this
>> FATAL message:
>>
>> 2013-09-12 08:09:42,273 [tabletserver.TabletServer] FATAL: Must set
>> dfs.durable.sync OR dfs.support.append to true.  Which one needs to be set
>> depends on your version of HDFS.  See ACCUMULO-623.
>> HADOOP RELEASE          VERSION           SYNC NAME             DEFAULT
>> Apache Hadoop           0.20.205          dfs.support.append    false
>> Apache Hadoop            0.23.x           dfs.support.append    true
>> Apache Hadoop             1.0.x           dfs.support.append    false
>> Apache Hadoop             1.1.x           dfs.durable.sync      true
>> Apache Hadoop          2.0.0-2.0.2        dfs.support.append    true
>> Cloudera CDH             3u0-3u3             ????               true
>> Cloudera CDH               3u4            dfs.support.append    true
>> Hortonworks HDP           `1.0            dfs.support.append    false
>> Hortonworks HDP           `1.1            dfs.support.append    false
>> 2013-09-12 11:54:00,752 [server.Accumulo] INFO : tserver starting
>> 2013-09-12 11:54:00,768 [server.Accumulo] INFO : Instance
>> d57cdc38-8ceb-4192-9da3-1ce2664df33b
>> 2013-09-12 11:54:00,771 [server.Accumulo] INFO : Data Version 5
>> 2013-09-12 11:54:00,771 [server.Accumulo] INFO : Attempting to talk to
>> zookeeper
>> 2013-09-12 11:54:00,952 [server.Accumulo] INFO : Zookeeper connected and
>> initialized, attemping to talk to HDFS
>> 2013-09-12 11:54:00,956 [server.Accumulo] INFO : Connected to HDFS
>> 2013-09-12 11:54:00,969 [server.Accumulo] INFO : gc.cycle.delay = 5m
>> 2013-09-12 11:54:00,969 [server.Accumulo] INFO : gc.cycle.start = 30s
>> 2013-09-12 11:54:00,969 [server.Accumulo] INFO : gc.port.client = 50091
>> 2013-09-12 11:54:00,969 [server.Accumulo] INFO : gc.threads.delete = 16
>> 2013-09-12 11:54:00,969 [server.Accumulo] INFO : gc.trash.ignore = false
>>
>> I saw this same FATAL message 8 times in the tserver_localhost.localdomain.log
>> between blocks of INFO messages, but no other fatal or warn messages.
>> Btw, this FATAL message also appears in my
>> tserver_localhost.localdomain.debug.log file.
>>
>> When I googled this Fatal message I found this page:
>>
>> http://mail-archives.apache.org/mod_mbox/accumulo-user/201304.mbox/%[EMAIL PROTECTED]%3E with
>> the same "WARN: There are no tablet servers: check that zookeeper and
>> accumulo are running." message.
>>
>> I checked http://127.0.0.1:50095/tservers, and it showed that there were
>> no tablet servers online. I looked at http://127.0.0.1:50095/log, and
>> saw the following messages:
>>
>> FATAL: Must set dfs.durable.sync or dfs.support.append to true. Which one
>> needs to be set depends on your version of HDFS. See Accumulo-623.
>>
>> WARN: There are no tablet servers: check that zookeeper and accumulo are
>> running.
>>
>> Using the info from the page I referenced above, I checked my
>> $ACCUMULO_HOME path and realized that I hadn't set that in the
>> conf/accumulo-env.sh
>>
>> So, I set it to the following:
>>
>> test -z "$ACCUMULO_HOME" && export
>> ACCUMULO_HOME=/home/accumulo/accumulo-1.5.0
>>
>> When I did an echo of $ACCUMULO_HOME it didn't return anything, so I also