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https://issues.apache.org/jira/browse/HBASE-14450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417917#comment-15417917
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Ted Yu commented on HBASE-14450:
--------------------------------
See my comment 4 hours ago.
With 'FSHLog$SyncRunner(1275): syncing writer' log, I identified two WAL files
which were written after the full backup was done.
These two files didn't appear in the 'Mismatch in length' errors.
Since actual map progress was 16% when the job stopped, looks like some WAL
files weren't even copied.
> HBase Backup/Restore Phase 3: Multiwal support
> ----------------------------------------------
>
> Key: HBASE-14450
> URL: https://issues.apache.org/jira/browse/HBASE-14450
> Project: HBase
> Issue Type: Task
> Affects Versions: 2.0.0
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Labels: backup
> Fix For: 2.0.0
>
> Attachments: 14450.v2.txt,
> org.apache.hadoop.hbase.backup.TestIncrementalBackup-output.txt
>
>
> We need to support multiwal configurations.
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