Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Plain View
MapReduce >> mail # user >> DataNodes fail to send heartbeat to HA-enabled NameNode


+
Takahiko Kawasaki 2012-10-30, 11:10
+
Harsh J 2012-10-30, 18:14
+
Steve Loughran 2012-10-30, 17:06
Copy link to this message
-
Re: DataNodes fail to send heartbeat to HA-enabled NameNode
Hi Takahiko,

Can you please provide the full datanode log up to the point where you
first see an NPE?

FWIW, this error has nothing to do with the new QuorumJournalManager
feature -- I've seen this bug once or twice over the last couple years but
never been able to reproduce it reliably.

-Todd

On Tue, Oct 30, 2012 at 10:06 AM, Steve Loughran <[EMAIL PROTECTED]>wrote:

>
>
> On 30 October 2012 11:10, Takahiko Kawasaki <[EMAIL PROTECTED]> wrote:
>
>> Hello,
>>
>> I have trouble in quorum-based HDFS HA of CDH 4.1.1.
>>
>> 2012-10-30 19:28:16,817 ERROR
>> org.apache.hadoop.hdfs.server.datanode.DataNode: Exception in
>> BPOfferService for Block pool
>> BP-2063217961-192.168.62.231-1351263110470 (storage id
>> DS-2090122187-192.168.62.233-50010-1338981658216) service to
>> node02.example.com/192.168.62.232:8020
>> java.lang.NullPointerException
>>         at
>> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.sendHeartBeat(BPServiceActor.java:435)
>>         at
>> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.offerService(BPServiceActor.java:521)
>>         at
>> org.apache.hadoop.hdfs.server.datanode.BPServiceActor.run(BPServiceActor.java:674)
>>         at java.lang.Thread.run(Thread.java:662)
>> --------------------
>>
>>
> look like you've been the first person to find an issue in some code that
> is very, very fresh.
>
> File a bug report on JIRA; try to replicate it on the latest apache alpha
> release if you can.
>

--
Todd Lipcon
Software Engineer, Cloudera
+
Todd Lipcon 2012-10-30, 20:16
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB