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
