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From "stack (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4789) On split, parent region is sticking around in oldest sequenceid to region map though not online; we don't cleanup WALs.
Date Sat, 19 Nov 2011 00:38:51 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-4789:
-------------------------

    Attachment: 4789-v2.txt

Hmmm... I've been running tests w/ this patch in place and have not seen the issue since.
 I'm going to commit this unless objection.  I don't think this the 'real' fix.  This patch
adds a clear of the raw encoded name after we do the snp-encodedname remove.  We shouldn't
be having to do this if our accounting is correct.  This patch logs when we the misaccounting
so hopefully we'll be able to figure whats going on down the line.  Will do that in different
issue.
                
> On split, parent region is sticking around in oldest sequenceid to region map though
not online; we don't cleanup WALs.
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4789
>                 URL: https://issues.apache.org/jira/browse/HBASE-4789
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>            Priority: Critical
>             Fix For: 0.92.0
>
>         Attachments: 4789-v2.txt, 4789.txt
>
>
> Here is log for a particular region:
> {code}
> 2011-11-15 05:46:31,382 INFO org.apache.hadoop.hbase.regionserver.SplitTransaction: Still
waiting on the master to process the split for 8bbd7388262dc8cb1ce2cf4f04a7281d
> 2011-11-15 05:46:31,483 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign: regionserver:7003-0x1337b0b92cd000a-0x1337b0b92cd000a
Attempting to transition node 8bbd7388262dc8cb1ce2cf4f04a7281d from RS_ZK_REGION_SPLIT to
RS_ZK_REG
> ION_SPLIT
> 2011-11-15 05:46:31,484 INFO org.apache.hadoop.hbase.regionserver.SplitRequest: Region
split, META updated, and report to master. Parent=TestTable,0862220095,1321335865649.8bbd7388262dc8cb1ce2cf4f04a7281d.,
new regions: TestTab
> le,0862220095,1321335989689.f00c683df3182d8ef33e315f77ca539c., TestTable,0892568091,1321335989689.a56ca1eff5b4401432fcba04b4e851f8..
Split took 1sec
> 2011-11-15 05:46:37,705 DEBUG org.apache.hadoop.hbase.regionserver.Store: Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/a56ca1eff5b4401432fcba04b4e851f8/info/9ce16d8fa94e4938964c04775a6fa1a7.8bbd7388262dc8cb1ce2cf4f04a7281d-
> hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9ce16d8fa94e4938964c04775a6fa1a7-top,
keycount=717559, bloomtype=NONE, size=711.1m
> 2011-11-15 05:46:37,705 DEBUG org.apache.hadoop.hbase.regionserver.Store: Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/a56ca1eff5b4401432fcba04b4e851f8/info/9213f4d7ee9b4fda857a97603a001f9e.8bbd7388262dc8cb1ce2cf4f04a7281d-
> hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9213f4d7ee9b4fda857a97603a001f9e-top,
keycount=416691, bloomtype=NONE, size=412.9m
> 2011-11-15 05:46:53,090 DEBUG org.apache.hadoop.hbase.regionserver.Store: Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/f00c683df3182d8ef33e315f77ca539c/info/9ce16d8fa94e4938964c04775a6fa1a7.8bbd7388262dc8cb1ce2cf4f04a7281d-
> hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9ce16d8fa94e4938964c04775a6fa1a7-bottom,
keycount=717559, bloomtype=NONE, size=711.1m
> 2011-11-15 05:46:53,090 DEBUG org.apache.hadoop.hbase.regionserver.Store: Compacting
hdfs://sv4r11s38:7000/hbase/TestTable/f00c683df3182d8ef33e315f77ca539c/info/9213f4d7ee9b4fda857a97603a001f9e.8bbd7388262dc8cb1ce2cf4f04a7281d-
> hdfs://sv4r11s38:7000/hbase/TestTable/8bbd7388262dc8cb1ce2cf4f04a7281d/info/9213f4d7ee9b4fda857a97603a001f9e-bottom,
keycount=416691, bloomtype=NONE, size=412.9m
> 2011-11-15 05:48:00,690 DEBUG org.apache.hadoop.hbase.regionserver.wal.HLog: Found 3
hlogs to remove out of total 12; oldest outstanding sequenceid is 5699 from region 8bbd7388262dc8cb1ce2cf4f04a7281d
> 2011-11-15 05:57:54,083 INFO org.apache.hadoop.hbase.regionserver.wal.HLog: Too many
hlogs: logs=33, maxlogs=32; forcing flush of 1 regions(s): 8bbd7388262dc8cb1ce2cf4f04a7281d
> 2011-11-15 05:57:54,083 WARN org.apache.hadoop.hbase.regionserver.LogRoller: Failed to
schedule flush of 8bbd7388262dc8cb1ce2cf4f04a7281dr=null, requester=null
> 2011-11-15 05:58:01,358 INFO org.apache.hadoop.hbase.regionserver.wal.HLog: Too many
hlogs: logs=34, maxlogs=32; forcing flush of 1 regions(s): 8bbd7388262dc8cb1ce2cf4f04a7281d
> 2011-11-15 05:58:01,359 WARN org.apache.hadoop.hbase.regionserver.LogRoller: Failed to
schedule flush of 8bbd7388262dc8cb1ce2cf4f04a7281dr=null, requester=null
> {code}

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