sijie commented on a change in pull request #368: Issue 360: [documentation]
configuration settings
URL: https://github.com/apache/bookkeeper/pull/368#discussion_r130924532
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File path: bookkeeper-server/conf/bk_server.conf
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@@ -157,22 +176,29 @@ explicitLacInterval = 1
# Maximum writes to buffer to achieve grouping
# journalBufferedWritesThreshold=524288
+# Maximum entries to buffer to impose on a journal write to achieve grouping.
+# journalBufferedEntriesThreshold=0
+
# If we should flush the journal when journal queue is empty
# journalFlushWhenQueueEmpty=false
# The number of threads that should handle journal callbacks
# numJournalCallbackThreads=1
+# The journal format version to write.
Review comment:
add following:
available formats are 1-5:
1: no header
2: a header section was added
3: ledger key was introduced
4: fencing key was introduced
5: expanding header to 512 and padding writes to align sector size
configured by `journalAlignmentSize`
By default, it is `4`. If you'd like to enable `padding-writes` feature,
you can set journal version to `5`.
You can disable `padding-writes` by setting journal version back to `4`.
This feature is available in 4.5.0
and onward versions.
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