[
https://issues.apache.org/jira/browse/HBASE-1534?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
stack reopened HBASE-1534:
--------------------------
Just saw this on jgray cluster. Looking at reportForDuty, looks like might be
able to fall through reportForDuty method and out into the init (if
stopRequested had not been reset say?).
Here is jgray log:
{code}
2009-07-29 08:12:25,630 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Shutdown thread complete
2009-07-29 08:12:25,630 INFO
org.apache.hadoop.hbase.regionserver.MemStoreFlusher:
globalMemStoreLimit=597.5m, globalMemStoreLimitLowMark=298.8m, maxHeap=1.9g
2009-07-29 08:12:25,631 INFO
org.apache.hadoop.hbase.regionserver.HRegionServer: Runs every 10000000ms
2009-07-29 08:12:25,637 INFO org.apache.zookeeper.ZooKeeper: Initiating client
connection, host=zk5:2181,zk4:2181,zk3:2181,zk2:2181,zk6:2181
sessionTimeout=60000
watcher=org.apache.hadoop.hbase.regionserver.hregionser...@2c96cf11
2009-07-29 08:12:25,638 INFO org.apache.zookeeper.ClientCnxn: Attempting
connection to server zk3/XX.XX.XX.143:2181
2009-07-29 08:12:25,641 INFO org.apache.zookeeper.ClientCnxn: Priming
connection to java.nio.channels.SocketChannel[connected
local=/XX.XX.XX.217:49697 remote=zk3/XX.XX.XX.143:2181]
2009-07-29 08:12:25,641 INFO org.apache.zookeeper.ClientCnxn: Server connection
successful
2009-07-29 08:12:25,650 INFO org.apache.zookeeper.ClientCnxn: EventThread shut
down
2009-07-29 08:12:25,650 ERROR
org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
java.lang.NullPointerException
at
org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:705)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:420)
at java.lang.Thread.run(Thread.java:636)
2009-07-29 08:12:25,651 FATAL
org.apache.hadoop.hbase.regionserver.HRegionServer: Unhandled exception.
Aborting...
java.io.IOException: Region server startup failed
at
org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:831)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:747)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:420)
at java.lang.Thread.run(Thread.java:636)
Caused by: java.lang.NullPointerException
at
org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:705)
... 2 more
{code}
Scenario was expired zk session.
> Got ZooKeeper event, state: Disconnected on HRS and then NPE on reinit
> ----------------------------------------------------------------------
>
> Key: HBASE-1534
> URL: https://issues.apache.org/jira/browse/HBASE-1534
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Nitay Joffe
> Fix For: 0.20.0
>
> Attachments: hbase-1534-v2.patch, hbase-1534.patch
>
>
> We got disconnect from zk but then when we tried to reinitialize ourselves,
> got a NPE. See below.
> {code}
> 2009-06-17 11:58:55,102 [Thread-16] INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Starting shutdown thread.
> 2009-06-17 11:58:55,102 [Thread-16] INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Shutdown thread complete
> 2009-06-17 11:58:55,102 [main-EventThread] INFO
> org.apache.hadoop.hbase.ipc.HBaseRpcMetrics: Initializing RPC Metrics with
> hostName=HRegionServer, port=60021
> 2009-06-17 11:58:55,103 [main-EventThread] INFO
> org.apache.hadoop.hbase.regionserver.MemcacheFlusher:
> globalMemcacheLimit=556.7m, globalMemcacheLimitLowMark=347.9m, maxHeap=1.4g
> 2009-06-17 11:58:55,103 [main-EventThread] INFO
> org.apache.hadoop.hbase.regionserver.HRegionServer: Runs every 10000000ms
> 2009-06-17 11:58:55,148 [regionserver/0:0:0:0:0:0:0:0:60021] ERROR
> org.apache.hadoop.hbase.regionserver.HRegionServer: Failed init
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:713)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:431)
> at java.lang.Thread.run(Thread.java:619)
> 2009-06-17 11:58:55,153 [regionserver/0:0:0:0:0:0:0:0:60021] FATAL
> org.apache.hadoop.hbase.regionserver.HRegionServer: Unhandled exception.
> Aborting...
> java.io.IOException: Region server startup failed
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:832)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:751)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:431)
> at java.lang.Thread.run(Thread.java:619)
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.init(HRegionServer.java:713)
> ... 2 more
> {code}
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