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https://issues.apache.org/jira/browse/BOOKKEEPER-986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Venkateswararao Jujjuri (JV) resolved BOOKKEEPER-986.
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Resolution: Fixed
Fix Version/s: 4.5.0
Issue resolved by merging pull request 92
[https://github.com/apache/bookkeeper/pull/92]
{noformat}
commit 6e738d0c02ebe6710a24aad505e2fd9386bb8821
Author: Charan Reddy Guttapalem <cguttapa...@salesforce.com>
AuthorDate: Tue Dec 20 16:48:48 2016 -0800
Commit: JV <vjujj...@salesforce.com>
CommitDate: Tue Dec 20 16:48:48 2016 -0800
BOOKKEEPER-986: Handle memtable flush failure
- If the memtable flush is failed previously then
for the next addEntry call it will try to flush the
existing snapshot
Author: Charan Reddy Guttapalem <cguttapa...@salesforce.com>
Reviewers: Sijie Guo <si...@apache.org>
Closes #92 from reddycharan/handlememtableflushfailure
{noformat}
> Handle Memtable flush failure
> -----------------------------
>
> Key: BOOKKEEPER-986
> URL: https://issues.apache.org/jira/browse/BOOKKEEPER-986
> Project: Bookkeeper
> Issue Type: Bug
> Reporter: Charan Reddy Guttapalem
> Assignee: Charan Reddy Guttapalem
> Priority: Critical
> Fix For: 4.5.0
>
>
> Consider the following scenario
> - currently bookie is in writemode but it is close to the diskusagethreshold
> and also entrymemtable is close to skipListSizeLimit
> - it received a addentry call, and now the size of the entrymemtable is
> greater than skipListSizeLimit
> - so onSizeLimitReached of SortedLedgerStorage will be called and now lets
> assume that memtable flush has failed because of diskusagethreshold
> - because of previous step, bookie would turn to readonly
> - now lets assume after certain rounds of compaction bookie reclaimed
> sufficient storage and went back to writemode
> - now bookie would be receiving addentry calls
> - because of outstanding snapshot from previous memtable flush failure, it
> will never retry to flush memtable
> - now the memory start keep going up and up and the process memory gets
> bloated
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