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Posted to issues@hbase.apache.org by "lujie (JIRA)" <ji...@apache.org> on 2019/01/18 09:32:00 UTC
[jira] [Comment Edited] (HBASE-21740) NPE happens while shutdown
the RS
[ https://issues.apache.org/jira/browse/HBASE-21740?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746069#comment-16746069 ]
lujie edited comment on HBASE-21740 at 1/18/19 9:31 AM:
--------------------------------------------------------
shutdown before startServices:
{code:java}
if (!isStopped() && !isAborted()) {
initializeThreads();
}{code}
so initializeThreads will skip and cacheFlusher is null
cacheFlusher will use in line 1978, hence NPE happens
Give the simple fix!
was (Author: xiaoheipangzi):
Give the simple fix!
> NPE happens while shutdown the RS
> ---------------------------------
>
> Key: HBASE-21740
> URL: https://issues.apache.org/jira/browse/HBASE-21740
> Project: HBase
> Issue Type: Bug
> Reporter: lujie
> Assignee: lujie
> Priority: Major
> Attachments: HBASE-21740_1.patch
>
>
> while shutdown a NM, we meet the NPE:
> {code:java}
> 2019-01-18 16:52:05,500 INFO [Thread-4] regionserver.HRegionServer: STOPPED: Shutdown hook
> 2019-01-18 16:52:05,896 INFO [regionserver/hadoop15:16020] regionserver.MetricsRegionServerWrapperImpl: Computing regionserver metrics every 5000 milliseconds
> 2019-01-18 16:52:05,978 INFO [regionserver/hadoop15:16020.Chore.1] hbase.ScheduledChore: Chore: CompactedHFilesCleaner was stopped
> 2019-01-18 16:52:05,996 ERROR [regionserver/hadoop15:16020] regionserver.HRegionServer: Failed init
> java.lang.NullPointerException
> at org.apache.hadoop.hbase.regionserver.HRegionServer.startServices(HRegionServer.java:1978)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1572)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:975)
> at java.lang.Thread.run(Thread.java:745)
> 2019-01-18 16:52:06,011 ERROR [regionserver/hadoop15:16020] regionserver.HRegionServer: ***** ABORTING region server hadoop15,16020,1547801516426: Unhandled: Region server startup failed *****
> java.io.IOException: Region server startup failed
> at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:3392)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1591)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:975)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hbase.regionserver.HRegionServer.startServices(HRegionServer.java:1978)
> at org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1572)
> ... 2 more
> {code}
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