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https://issues.apache.org/jira/browse/HDFS-6777?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Thomas updated HDFS-6777:
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Attachment: 6777-design.2.pdf
Updated the design doc to reflect changes mentioned at
https://issues.apache.org/jira/browse/HDFS-6634?focusedCommentId=14113328&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14113328.
All of the code for this subtask is included in the main patch at HDFS-6634.
> Supporting consistent edit log reads when in-progress edit log segments are
> included
> ------------------------------------------------------------------------------------
>
> Key: HDFS-6777
> URL: https://issues.apache.org/jira/browse/HDFS-6777
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: qjm
> Reporter: James Thomas
> Assignee: James Thomas
> Attachments: 6777-design.2.pdf, 6777-design.pdf, HDFS-6777.patch
>
>
> For inotify, we want to be able to read transactions from in-progress edit
> log segments so we can serve transactions to listeners soon after they are
> committed. This JIRA works toward ensuring that we do not send unsync'ed
> transactions back to the client by 1) discarding in-progress segments if we
> have a finalized segment starting at the same transaction ID and 2) if there
> are no finalized segments at the same transaction ID, using only the
> in-progress segments with the largest seen lastWriterEpoch. See the design
> document for more background and details.
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