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https://issues.apache.org/jira/browse/HDFS-1378?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin Patrick McCabe reopened HDFS-1378:
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Assignee: Colin Patrick McCabe (was: Aaron T. Myers)
I'd like to port this to branch-1 so that we can have better error messages
there. It should be a trivial port. Any objections?
> Edit log replay should track and report file offsets in case of errors
> ----------------------------------------------------------------------
>
> Key: HDFS-1378
> URL: https://issues.apache.org/jira/browse/HDFS-1378
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.22.0
> Reporter: Todd Lipcon
> Assignee: Colin Patrick McCabe
> Fix For: 0.23.0
>
> Attachments: hdfs-1378-branch20.txt, hdfs-1378.0.patch,
> hdfs-1378.1.patch, hdfs-1378.2.txt
>
>
> Occasionally there are bugs or operational mistakes that result in corrupt
> edit logs which I end up having to repair by hand. In these cases it would be
> very handy to have the error message also print out the file offsets of the
> last several edit log opcodes so it's easier to find the right place to edit
> in the OP_INVALID marker. We could also use this facility to provide a rough
> estimate of how far along edit log replay the NN is during startup (handy
> when a 2NN has died and replay takes a while)
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