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Posted to issues@hbase.apache.org by "Andrew Purtell (JIRA)" <ji...@apache.org> on 2015/07/09 19:48:04 UTC
[jira] [Created] (HBASE-14048) Procedure framework doesn't always
check for null return from ZK getData
Andrew Purtell created HBASE-14048:
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Summary: Procedure framework doesn't always check for null return from ZK getData
Key: HBASE-14048
URL: https://issues.apache.org/jira/browse/HBASE-14048
Project: HBase
Issue Type: Bug
Affects Versions: 0.98.13
Reporter: Andrew Purtell
Assignee: Andrew Purtell
Fix For: 0.98.14
Example:
{noformat}
2015-07-09 04:20:30,649 ERROR [ver60020-EventThread] zookeeper.ClientCnxn - Error while calling watcher
java.lang.NullPointerException
at org.apache.hadoop.hbase.protobuf.ProtobufUtil.isPBMagicPrefix(ProtobufUtil.java:241)
at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.startNewSubprocedure(ZKProcedureMemberRpcs.java:203)
at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.waitForNewProcedures(ZKProcedureMemberRpcs.java:172)
at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs.access$100(ZKProcedureMemberRpcs.java:55)
at org.apache.hadoop.hbase.procedure.ZKProcedureMemberRpcs$1.nodeChildrenChanged(ZKProcedureMemberRpcs.java:107)
at org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:358)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:522)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
{noformat}
This is observed with 0.98.
There may be a deeper cause but let's start by fixing the obvious problem. Audit ProcedureV2 also on later branches.
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