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https://issues.apache.org/jira/browse/OAK-4939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15686259#comment-15686259
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Chetan Mehrotra commented on OAK-4939:
--------------------------------------
Implemented the support in [feature
branch|https://github.com/chetanmeh/jackrabbit-oak/compare/trunk...chetanmeh:OAK-4939?expand=1].
Also attached as [patch|^OAK-4939-v1.diff]
With this AsyncIndexerService would now mark any index which fails to update
for 30 mins (configurable) as {{corrupt}} and ignore such indexes from further
indexing.
When any index is marked as corrupt following log entry would be made
{noformat}
2016-11-22 12:52:35,484 INFO NA [async-index-update-fulltext-async]
o.a.j.o.p.i.AsyncIndexUpdate - Marking [/oak:index/lucene] as corrupt. The
index is failing since Tue Nov 22 12:51:25 IST 2016 ,1 indexing cycles, failed
7 times, skipped 0 time
{noformat}
Post this when any new content gets indexed and any such corrupt index is
skipped then following warn entry would be made
{noformat}
2016-11-22 12:52:35,485 WARN NA [async-index-update-fulltext-async]
o.a.j.o.p.index.IndexUpdate - Ignoring corrupt index [/oak:index/lucene] which
has been marked as corrupt since [2016-11-22T12:51:25.492+05:30]. This index
MUST be reindexed for indexing to work properly
{noformat}
This info would also be see in MBean
!corrupt-index-mbean.png!
Later once the index is reindexed following log entry would be made
{noformat}
2016-11-22 12:56:25,486 INFO NA [async-index-update-fulltext-async]
o.a.j.o.p.index.IndexUpdate - Removing corrupt flag from index
[/oak:index/lucene] which has been marked as corrupt since [corrupt =
2016-11-22T12:51:25.492+05:30]
{noformat}
> Isolate corrupted index and make async indexer more resilient
> -------------------------------------------------------------
>
> Key: OAK-4939
> URL: https://issues.apache.org/jira/browse/OAK-4939
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: lucene, query
> Reporter: Chetan Mehrotra
> Assignee: Chetan Mehrotra
> Fix For: 1.6
>
> Attachments: OAK-4939-v1.diff, corrupt-index-mbean.png
>
>
> Currently if any one of the async index gets corrupted it brings down the
> whole async indexer and no other index gets updated untill system
> administrator reindexes the problamatic async index.
> Instead of fail all we should isolate such corrupted index and mark them as
> corrupted. And still let async indexer progress for other working indexes.
> This would ensure that one corrupted index does not affect the whole system
> and allow the application to work partially.
> Feature branch -
> https://github.com/chetanmeh/jackrabbit-oak/compare/trunk...chetanmeh:OAK-4939?expand=1
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