Ivan Kelly created BOOKKEEPER-664:
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Summary: 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
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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