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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-473) When a table is deleted, master sends multiple close messages to the region server
Date Wed, 27 Feb 2008 00:54:52 GMT

    [ https://issues.apache.org/jira/browse/HBASE-473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12572746#action_12572746
] 

Jim Kellerman commented on HBASE-473:
-------------------------------------

It appears that the master does not clear its return message queue after it sends the close
message or it keeps finding the close request in some other data structure that is not getting
cleared.

> When a table is deleted, master sends multiple close messages to the region server
> ----------------------------------------------------------------------------------
>
>                 Key: HBASE-473
>                 URL: https://issues.apache.org/jira/browse/HBASE-473
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: master
>    Affects Versions: 0.2.0
>            Reporter: Jim Kellerman
>            Assignee: Bryan Duxbury
>
> While TestHBaseCluster succeeds, it demonstrates that the master tells the region server
to close the region multiple times.
> {code}
>     [junit] 2008-02-26 15:42:26,718 DEBUG [IPC Server handler 1 on 60000] master.ChangeTableState(131):
adding region test,,1204069326375 to kill list
>     [junit] 2008-02-26 15:42:26,718 DEBUG [IPC Server handler 1 on 60000] master.ChangeTableState(138):
inserted local kill list into kill list for server 10.69.80.2:2154
>     [junit] 2008-02-26 15:42:26,796 INFO  [IPC Server handler 1 on 60000] master.HMaster(644):
deleted table: test
>     [junit] 2008-02-26 15:42:27,515 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:27,515 DEBUG [RegionServer:0.worker] regionserver.HRegion(410):
compactions and cache flushes disabled for region test,,1204069326375
>     [junit] 2008-02-26 15:42:27,515 DEBUG [RegionServer:0.worker] regionserver.HRegion(428):
new updates and scanners for region test,,1204069326375 disabled
>     [junit] 2008-02-26 15:42:27,515 DEBUG [RegionServer:0.worker] regionserver.HRegion(446):
no more active scanners for region test,,1204069326375
>     [junit] 2008-02-26 15:42:27,515 DEBUG [RegionServer:0.worker] regionserver.HRegion(452):
no more row locks outstanding on region test,,1204069326375
>     [junit] 2008-02-26 15:42:27,515 DEBUG [RegionServer:0.worker] regionserver.HRegion(889):
Started memcache flush for region test,,1204069326375. Size 86.4k
>     [junit] 2008-02-26 15:42:27,546 INFO  [RegionManager.rootScanner] master.BaseScanner(147):
RegionManager.rootScanner scanning meta region {regionname: -ROOT-,,0, startKey: <>,
server: 10.69.80.2:2154}
>     [junit] 2008-02-26 15:42:27,562 DEBUG [RegionManager.rootScanner] master.BaseScanner(179):
RegionManager.rootScanner regioninfo: {regionname: .META.,,1, startKey: <>, endKey:
<>, encodedName: 1028785192, tableDesc: {name: .META., families: {info:={name: info,
max versions: 1, compression: NONE, in memory: false, block cache enabled: false, max length:
2147483647, bloom filter: none}}}}, server: 10.69.80.2:2154, startCode: 1204069326359
>     [junit] 2008-02-26 15:42:27,562 INFO  [RegionManager.rootScanner] master.BaseScanner(225):
RegionManager.rootScanner scan of meta region {regionname: -ROOT-,,0, startKey: <>,
server: 10.69.80.2:2154} complete
>     [junit] 2008-02-26 15:42:27,812 DEBUG [RegionServer:0.worker] regionserver.HStore(1154):
Added 1417693581/anchor/2354913287379000616 with 1000 entries, sequence id 2007, and size
60.0k for 1417693581/anchor
>     [junit] 2008-02-26 15:42:28,125 DEBUG [RegionServer:0.worker] regionserver.HStore(1154):
Added 1417693581/contents/295490293048850969 with 1000 entries, sequence id 2007, and size
55.1k for 1417693581/contents
>     [junit] 2008-02-26 15:42:28,125 DEBUG [RegionServer:0.worker] regionserver.HRegion(995):
Finished memcache flush for region test,,1204069326375 in 610ms, sequenceid=2007
>     [junit] 2008-02-26 15:42:28,125 DEBUG [RegionServer:0.worker] regionserver.HStore(1063):
closed 1417693581/anchor
>     [junit] 2008-02-26 15:42:28,125 DEBUG [RegionServer:0.worker] regionserver.HStore(1063):
closed 1417693581/contents
>     [junit] 2008-02-26 15:42:28,125 INFO  [RegionServer:0.worker] regionserver.HRegion(478):
closed test,,1204069326375
>     [junit] 2008-02-26 15:42:28,515 DEBUG [IPC Server handler 0 on 60000] master.ServerManager(287):
Received MSG_REPORT_CLOSE : test,,1204069326375 from 10.69.80.2:2154
>     [junit] 2008-02-26 15:42:28,515 INFO  [IPC Server handler 0 on 60000] master.ServerManager(303):
10.69.80.2:2154 no longer serving test,,1204069326375
>     [junit] 2008-02-26 15:42:28,515 DEBUG [HMaster] master.HMaster(410): Main processing
loop: ProcessRegionClose of test,,1204069326375
>     [junit] 2008-02-26 15:42:28,515 INFO  [HMaster] master.ProcessRegionClose(61): region
closed: test,,1204069326375
>     [junit] 2008-02-26 15:42:28,515 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:28,515 DEBUG [HMaster] master.RegionServerOperation(75):
numberOfMetaRegions: 1, onlineMetaRegions.size(): 1
>     [junit] 2008-02-26 15:42:28,515 DEBUG [HMaster] regionserver.HRegion(1913): DELETING
region hdfs://localhost:2123/user/jim/test/1417693581
>     [junit] 2008-02-26 15:42:29,500 INFO  [RegionManager.metaScanner] master.BaseScanner(147):
RegionManager.metaScanner scanning meta region {regionname: .META.,,1, startKey: <>,
server: 10.69.80.2:2154}
>     [junit] 2008-02-26 15:42:29,500 INFO  [RegionManager.metaScanner] master.BaseScanner(225):
RegionManager.metaScanner scan of meta region {regionname: .META.,,1, startKey: <>,
server: 10.69.80.2:2154} complete
>     [junit] 2008-02-26 15:42:29,500 INFO  [RegionManager.metaScanner] master.MetaScanner(136):
all meta regions scanned
>     [junit] 2008-02-26 15:42:29,515 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:30,515 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:31,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:32,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:33,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:34,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:35,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:36,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:37,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:37,546 INFO  [RegionManager.rootScanner] master.BaseScanner(147):
RegionManager.rootScanner scanning meta region {regionname: -ROOT-,,0, startKey: <>,
server: 10.69.80.2:2154}
>     [junit] 2008-02-26 15:42:37,562 DEBUG [RegionManager.rootScanner] master.BaseScanner(179):
RegionManager.rootScanner regioninfo: {regionname: .META.,,1, startKey: <>, endKey:
<>, encodedName: 1028785192, tableDesc: {name: .META., families: {info:={name: info,
max versions: 1, compression: NONE, in memory: false, block cache enabled: false, max length:
2147483647, bloom filter: none}}}}, server: 10.69.80.2:2154, startCode: 1204069326359
>     [junit] 2008-02-26 15:42:37,562 INFO  [RegionManager.rootScanner] master.BaseScanner(225):
RegionManager.rootScanner scan of meta region {regionname: -ROOT-,,0, startKey: <>,
server: 10.69.80.2:2154} complete
>     [junit] 2008-02-26 15:42:38,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:39,500 INFO  [RegionManager.metaScanner] master.BaseScanner(147):
RegionManager.metaScanner scanning meta region {regionname: .META.,,1, startKey: <>,
server: 10.69.80.2:2154}
>     [junit] 2008-02-26 15:42:39,500 INFO  [RegionManager.metaScanner] master.BaseScanner(225):
RegionManager.metaScanner scan of meta region {regionname: .META.,,1, startKey: <>,
server: 10.69.80.2:2154} complete
>     [junit] 2008-02-26 15:42:39,500 INFO  [RegionManager.metaScanner] master.MetaScanner(136):
all meta regions scanned
>     [junit] 2008-02-26 15:42:39,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:40,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:41,531 INFO  [RegionServer:0.worker] regionserver.HRegionServer$Worker(726):
MSG_REGION_CLOSE : test,,1204069326375
>     [junit] 2008-02-26 15:42:41,812 INFO  [main] client.HBaseAdmin(248): table test deleted
> {code}

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