hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7671) Flushing memstore again after last failure could cause data loss
Date Tue, 26 Feb 2013 07:22:14 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13586887#comment-13586887
] 

Hudson commented on HBASE-7671:
-------------------------------

Integrated in HBase-0.94 #860 (See [https://builds.apache.org/job/HBase-0.94/860/])
    HBASE-7671 Flushing memstore again after last failure could cause data loss (Revision
1450001)

     Result = FAILURE
zjushch : 
Files : 
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/regionserver/wal/TestWALReplay.java

                
> Flushing memstore again after last failure could cause data loss
> ----------------------------------------------------------------
>
>                 Key: HBASE-7671
>                 URL: https://issues.apache.org/jira/browse/HBASE-7671
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.94.4
>            Reporter: chunhui shen
>            Assignee: chunhui shen
>             Fix For: 0.95.0
>
>         Attachments: 7671-94.patch, HBASE-7671.patch, HBASE-7671v2.patch, HBASE-7671v3.patch,
HBASE-7671v4.patch, HBASE-7671v5.patch
>
>
> See the following logs first:
> {code}
> 2013-01-23 18:58:38,801 INFO org.apache.hadoop.hbase.regionserver.Store: Flushed , sequenceid=9746535080,
memsize=101.8m, into tmp file hdfs://dw77.kgb.sqa.cm4:9900/hbase-test3/writetest1/8dc14e35b4d7c0e481e0bb30849cff7d/.tmp/bebeeecc56364b6c8126cf1dc6782a25
> 2013-01-23 18:58:41,982 WARN org.apache.hadoop.hbase.regionserver.MemStore: Snapshot
called again without clearing previous. Doing nothing. Another ongoing flush or did we fail
last attempt?
> 2013-01-23 18:58:43,274 INFO org.apache.hadoop.hbase.regionserver.Store: Flushed , sequenceid=9746599334,
memsize=101.8m, into tmp file hdfs://dw77.kgb.sqa.cm4:9900/hbase-test3/writetest1/8dc14e35b4d7c0e481e0bb30849cff7d/.tmp/4eede32dc469480bb3d469aaff332313
> {code}
> The first time memstore flush is failed when commitFile()(Logged the first edit above),
then trigger server abort, but another flush is coming immediately(could caused by move/split,Logged
the third edit above) and successful.
> For the same memstore's snapshot, we get different sequenceid, it causes data loss when
replaying log edits
> See details from the unit test case in the patch

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message