IllegalStateException thrown in client after region was split and deleted
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Key: HBASE-471
URL: https://issues.apache.org/jira/browse/HBASE-471
Project: Hadoop HBase
Issue Type: Bug
Affects Versions: 0.1.0
Environment: Linux Debian, HBase 0.16.0
Reporter: Lars George
For some reason a client sometimes fails to locate a row with a
IllegalStateException when the region was split and deleted.
> [2008-02-25 16:12:39,171] ERROR [http-80-Processor20]
> archive.MultilingualArchive - getDocument: An error occurred.
> java.lang.IllegalStateException: region offline:
> pdc-docs,US7039976_20060509,1203981958556
> at
> org.apache.hadoop.hbase.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:432)
> at
> org.apache.hadoop.hbase.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:343)
> at
> org.apache.hadoop.hbase.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:306)
> at org.apache.hadoop.hbase.HTable.getRegionLocation(HTable.java:102)
> at org.apache.hadoop.hbase.HTable.get(HTable.java:280)
Tracing the region on the master shows this:
> 2008-02-25 16:09:38,761 DEBUG org.apache.hadoop.hbase.HMaster: Received
> MSG_REGION_SPLIT :
+pdc-docs,US7039976_20060509,1203981958556 from 192.168.105.21:60020
> 2008-02-25 16:09:38,761 INFO org.apache.hadoop.hbase.HMaster: region
> pdc-docs,US7039976_20060509,1203981958556 split. New regions
+are: pdc-docs,US7039976_20060509,1203984578345,
pdc-docs,US7046359_20060516,1203984578345
> 2008-02-25 16:10:02,470 DEBUG org.apache.hadoop.hbase.HMaster:
> HMaster.metaScanner regioninfo: {regionname:
+pdc-docs,US7039976_20060509,1203981958556, startKey: <US7039976_20060509>,
endKey: <US7053021_20060530>, encodedName: 1260314009,
+offline: true, split: true, tableDesc: {name: pdc-docs, families:
{contents:={name: contents, max versions: 3, compression: NONE, in
+memory: false, max length: 2147483647, bloom filter: none}, language:={name:
language, max versions: 3, compression: NONE, in
+memory: false, max length: 2147483647, bloom filter: none}, mimetype:={name:
mimetype, max versions: 3, compression: NONE, in
+memory: false, max length: 2147483647, bloom filter: none}}}}, server:
192.168.105.21:60020, startCode: 1203949130468
> 2008-02-25 16:10:02,513 DEBUG org.apache.hadoop.hbase.HMaster:
> pdc-docs,US7039976_20060509,1203984578345 no longer has references
+to pdc-docs,US7039976_20060509,1203981958556
> 2008-02-25 16:10:02,516 DEBUG org.apache.hadoop.hbase.HMaster:
> pdc-docs,US7046359_20060516,1203984578345 no longer has references
+to pdc-docs,US7039976_20060509,1203981958556
> 2008-02-25 16:10:02,516 INFO org.apache.hadoop.hbase.HMaster: Deleting region
> pdc-docs,US7039976_20060509,1203981958556 because
+daughter splits no longer hold references
After discussion with st^ack it seems that the server is simply not retrying
IllegalStateException but IOExceptions only. Also see HBASE-452 which should be
addressed at the same time.
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