rajeshbabu created HBASE-6115:
---------------------------------
Summary: NullPointerException is thrown when root and meta table
regions are assigning to another RS.
Key: HBASE-6115
URL: https://issues.apache.org/jira/browse/HBASE-6115
Project: HBase
Issue Type: Bug
Affects Versions: 0.94.0
Reporter: rajeshbabu
Assignee: rajeshbabu
Priority: Minor
Fix For: 0.94.1
Lets suppose we have two region servers RS1 and RS2.
If region server (RS1) having root and meta regions went down, master will
assign them to another region server RS2. At that time recieved
NullPointerException.
{code}
2012-05-04 20:19:52,912 DEBUG
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
Looked up root region location,
connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@25de152f;
serverName=
2012-05-04 20:19:52,914 DEBUG
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation:
Looked up root region location,
connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@25de152f;
serverName=
2012-05-04 20:19:52,916 WARN
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler: Exception
running postOpenDeployTasks; region=1028785192
java.lang.NullPointerException
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatchCallback(HConnectionManager.java:1483)
at
org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation.processBatch(HConnectionManager.java:1367)
at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:945)
at org.apache.hadoop.hbase.client.HTable.doPut(HTable.java:801)
at org.apache.hadoop.hbase.client.HTable.put(HTable.java:776)
at org.apache.hadoop.hbase.catalog.MetaEditor.put(MetaEditor.java:98)
at
org.apache.hadoop.hbase.catalog.MetaEditor.putToCatalogTable(MetaEditor.java:88)
at
org.apache.hadoop.hbase.catalog.MetaEditor.updateLocation(MetaEditor.java:259)
at
org.apache.hadoop.hbase.catalog.MetaEditor.updateMetaLocation(MetaEditor.java:221)
at
org.apache.hadoop.hbase.regionserver.HRegionServer.postOpenDeployTasks(HRegionServer.java:1625)
at
org.apache.hadoop.hbase.regionserver.handler.OpenRegionHandler$PostOpenDeployTasksThread.run(OpenRegionHandler.java:241)
2012-05-04 20:19:52,920 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
Closing .META.,,1.1028785192: disabling compactions & flushes
2012-05-04 20:19:52,920 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
Updates disabled for region .META.,,1.1028785192
{code}
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