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https://issues.apache.org/jira/browse/HDFS-2866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13197171#comment-13197171
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Hari Mankude commented on HDFS-2866:
------------------------------------
2012-01-31 19:16:15,857 WARN ha.EditLogTailer (EditLogTailer.java:run(313)) -
Edit log tailer interrupted
java.lang.InterruptedException: sleep interrupted
at java.lang.Thread.sleep(Native Method)
at
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$EditLogTailerThread.run(EditLogTailer.java:311)
---------------> Failover happens and this NN is the active NN
2012-01-31 19:16:15,858 INFO namenode.FSNamesystem
(FSNamesystem.java:startActiveServices(515)) - Starting services required for
active state
2012-01-31 19:16:15,860 INFO namenode.FileJournalManager
(FileJournalManager.java:recoverUnfinalizedSegments(282)) - Recovering
unfinalized segments in /homes/hortonha/namenode/fsimage/current
2012-01-31 19:16:15,881 INFO namenode.FileJournalManager
(FileJournalManager.java:finalizeLogSegment(94)) - Finalizing edits file
/homes/hortonha/namenode/fsimage/current/edits_inprogress_0000000000000219665
->
/homes/hortonha/namenode/fsimage/current/edits_0000000000000219665-0000000000000220761
--------------> 220761 is the last txid in the dfs.edits.dir
2012-01-31 19:16:15,912 INFO namenode.FileJournalManager
(FileJournalManager.java:recoverUnfinalizedSegments(282)) - Recovering
unfinalized segments in /homes/hortonha/namenode/current
2012-01-31 19:16:15,931 INFO namenode.FileJournalManager
(FileJournalManager.java:finalizeLogSegment(94)) - Finalizing edits file
/homes/hortonha/namenode/current/edits_inprogress_0000000000000219665 ->
/homes/hortonha/namenode/current/edits_0000000000000219665-0000000000000220760
---------------> 220760 is the last txid in the shared.edits.dir
2012-01-31 19:16:15,933 INFO namenode.FSNamesystem
(FSNamesystem.java:startActiveServices(527)) - Catching up to latest edits from
old active before taking over writer role in edits logs.
2012-01-31 19:16:15,939 INFO namenode.FSImage (FSImage.java:loadEdits(682)) -
Reading
/homes/hortonha/namenode/fsimage/current/edits_0000000000000219665-0000000000000220761
expecting start txid #219665
2012-01-31 19:16:15,956 INFO namenode.FSImage
(FSEditLogLoader.java:loadFSEdits(90)) - Edits file
/homes/hortonha/namenode/fsimage/current/edits_0000000000000219665-0000000000000220761
of size 1048580 edits # 1097 loaded in 0 seconds.
2012-01-31 19:16:15,956 INFO blockmanagement.BlockManager
(BlockManager.java:isReplicaCorrupt(1668)) - Received an RBW replica for block
blk_-5497074126999415278_65205 on 98.137.233.237:50010: ignoring it, since the
block is complete with the same generation stamp.
2012-01-31 19:16:16,465 INFO blockmanagement.BlockManager
(BlockManager.java:processMisReplicatedBlocks(1932)) - Number of blocks being
written = 3
2012-01-31 19:16:16,465 INFO namenode.FSNamesystem
(FSNamesystem.java:startActiveServices(543)) - Will take over writing edit logs
at txnid 220762
-------------------> takes over at 220762 resulting in a gap in edit logs in
shared directory. Standby is stuck at this point.
2012-01-31 19:16:16,467 INFO namenode.FSEditLog
(FSEditLog.java:startLogSegment(846)) - Starting log segment at 220762
> Standby does not start up due to a gap in transaction id
> --------------------------------------------------------
>
> Key: HDFS-2866
> URL: https://issues.apache.org/jira/browse/HDFS-2866
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: HA branch (HDFS-1623)
> Reporter: Hari Mankude
> Priority: Critical
>
> Standby notices a gap in the transaction id in the shared.edits directory.
> The transactions in dfs.edits.dir does not seem to have the gap. The gap
> happens during a failover.
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