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https://issues.apache.org/jira/browse/BOOKKEEPER-664?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ivan Kelly updated BOOKKEEPER-664:
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Attachment: 0001-BOOKKEEPER-664-Compaction-increases-latency-on-journ.patch
0001-BOOKKEEPER-664-Compaction-increases-latency-on-journ-branch-4.2.patch
Fix attached. Max batch size set at 100000 now. This will need to be revisited
when BOOKKEEPER-432 goes in.
> Compaction increases latency on journal writes
> ----------------------------------------------
>
> Key: BOOKKEEPER-664
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-664
> Project: Bookkeeper
> Issue Type: Bug
> Affects Versions: 4.2.1
> Reporter: Ivan Kelly
> Assignee: Ivan Kelly
> Fix For: 4.2.2, 4.3.0
>
> Attachments:
> 0001-BOOKKEEPER-664-Compaction-increases-latency-on-journ-branch-4.2.patch,
> 0001-BOOKKEEPER-664-Compaction-increases-latency-on-journ.patch
>
>
> Compaction writes to the journal to avoid data loss (see BOOKKEEPER-530).
> BOOKKEEPER-530 correctly identified that this may affect latency on the
> journal but we have observed this since in production. It is possible to
> avoid the journal completely, as twitter do in their github branch.
> Basically, we need to write to the entrylogger first, flush the entry log and
> then add to the index.
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