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https://issues.apache.org/jira/browse/HBASE-22023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16789113#comment-16789113
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Reid Chan commented on HBASE-22023:
-----------------------------------
May i ask which version affected?
> similar to HBASE-21740: NPE happens while shutdown the RS
> ---------------------------------------------------------
>
> Key: HBASE-22023
> URL: https://issues.apache.org/jira/browse/HBASE-22023
> Project: HBase
> Issue Type: Bug
> Reporter: lujie
> Assignee: lujie
> Priority: Major
>
> shutdown command comes before startServices:
> {code:java}
> if (!isStopped() && !isAborted()) {
> initializeThreads();
> }{code}
> so initializeThreads will skip and leases is null
> leases will be used in line 1996 without check, hence NPE happens
> Give the simple fix!
> {code:java}
> 2019-03-10 14:17:12,690 ERROR [regionserver/hadoop15:16020]
> regionserver.HRegionServer: Failed init
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.startServices(HRegionServer.java:1996)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1575)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:976)
> at java.lang.Thread.run(Thread.java:745)
> 2019-03-10 14:17:12,719 ERROR [regionserver/hadoop15:16020]
> regionserver.HRegionServer: ***** ABORTING region server
> hadoop15,16020,1552198622594: Unhandled: Region server startup failed *****
> java.io.IOException: Region server startup failed
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:3398)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1594)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:976)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.startServices(HRegionServer.java:1996)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1575)
> ... 2 more
> {code}
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