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https://issues.apache.org/jira/browse/HBASE-5568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13231804#comment-13231804
]
Hadoop QA commented on HBASE-5568:
----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12518769/HBASE-5568-92v2.patch
against trunk revision .
+1 @author. The patch does not contain any @author tags.
-1 tests included. The patch doesn't appear to include any new or modified
tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
-1 patch. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-HBASE-Build/1215//console
This message is automatically generated.
> Multi concurrent flushcache() for one region could cause data loss
> ------------------------------------------------------------------
>
> Key: HBASE-5568
> URL: https://issues.apache.org/jira/browse/HBASE-5568
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Reporter: chunhui shen
> Assignee: chunhui shen
> Fix For: 0.90.7, 0.92.2, 0.94.0, 0.96.0
>
> Attachments: HBASE-5568-90.patch, HBASE-5568-92v2.patch,
> HBASE-5568.patch, HBASE-5568.patch, HBASE-5568v2.patch
>
>
> We could call HRegion#flushcache() concurrently now through
> HRegionServer#splitRegion or HRegionServer#flushRegion by HBaseAdmin.
> However, we find if HRegion#internalFlushcache() is called concurrently by
> multi thread, HRegion.memstoreSize will be calculated wrong.
> At the end of HRegion#internalFlushcache(), we will do
> this.addAndGetGlobalMemstoreSize(-flushsize), but the flushsize may not the
> actual memsize which flushed to hdfs. It cause HRegion.memstoreSize is
> negative and prevent next flush if we close this region.
> Logs in RS for region e9d827913a056e696c39bc569ea3
> 2012-03-11 16:31:36,690 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> writetest1,,1331454657410.e9d827913a056e696c39bc569ea3
> f99f., current region memstore size 128.0m
> 2012-03-11 16:31:37,999 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf1/8162481165586107427, entries=153106, sequenceid=619316544,
> memsize=59.6m, filesize=31.2m
> 2012-03-11 16:31:38,830 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> writetest1,,1331454657410.e9d827913a056e696c39bc569ea3
> f99f., current region memstore size 134.8m
> 2012-03-11 16:31:39,458 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf2/3425971951499794221, entries=230183, sequenceid=619316544,
> memsize=68.5m, filesize=26.6m
> 2012-03-11 16:31:39,459 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Finished memstore flush of ~128.1m for region
> writetest1,,1331454657410.e9d827913a
> 056e696c39bc569ea3f99f. in 2769ms, sequenceid=619316544, compaction
> requested=false
> 2012-03-11 16:31:39,459 DEBUG org.apache.hadoop.hbase.regionserver.HRegion:
> Started memstore flush for
> writetest1,,1331454657410.e9d827913a056e696c39bc569ea3
> f99f., current region memstore size 6.8m
> 2012-03-11 16:31:39,529 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf1/1811012969998104626, entries=8002, sequenceid=619332759,
> memsize=3.1m, filesize=1.6m
> 2012-03-11 16:31:39,640 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf2/770333473623552048, entries=12231, sequenceid=619332759,
> memsize=3.6m, filesize=1.4m
> 2012-03-11 16:31:39,641 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Finished memstore flush of ~134.8m for region
> writetest1,,1331454657410.e9d827913a
> 056e696c39bc569ea3f99f. in 811ms, sequenceid=619332759, compaction
> requested=true
> 2012-03-11 16:31:39,707 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf1/5656568849587368557, entries=119, sequenceid=619332979,
> memsize=47.4k, filesize=25.6k
> 2012-03-11 16:31:39,775 INFO org.apache.hadoop.hbase.regionserver.Store:
> Added
> hdfs://dw74.kgb.sqa.cm4:9700/hbase-func1/writetest1/e9d827913a056e696c39bc569e
> a3f99f/cf2/794343845650987521, entries=157, sequenceid=619332979,
> memsize=47.8k, filesize=19.3k
> 2012-03-11 16:31:39,777 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> Finished memstore flush of ~6.8m for region
> writetest1,,1331454657410.e9d827913a05
> 6e696c39bc569ea3f99f. in 318ms, sequenceid=619332979, compaction
> requested=true
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