Re: DataNodes fail to send heartbeat to HA-enabled NameNode

[Steve Loughran]

On 30 October 2012 11:10, Takahiko Kawasaki <daru...@gmail.com> 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.