[
https://issues.apache.org/jira/browse/HBASE-471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573318#action_12573318
]
Clint Morgan commented on HBASE-471:
------------------------------------
I've also had similar symptoms as Lars has described. In particular, table
map/reduces got stalled after a split. Then I tried to diagnose with the shell
and also had the phantom table effect. I really doubt this is "bug in the
shell" because the select statement would normally work, and hbase was
performing anomalously otherwise.
I've lost the logs, but will try and reproduce the problem today.
> IllegalStateException thrown in client after region was split and deleted
> -------------------------------------------------------------------------
>
> 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
> Attachments: hbase-master-log.tar.gz, logs.tar.gz
>
>
> 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.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
