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https://issues.apache.org/jira/browse/OAK-9651?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17486810#comment-17486810
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Nitin Gupta commented on OAK-9651:
----------------------------------
1.22 :
[https://github.com/apache/jackrabbit-oak/commit/9c0cca33bdaf03becf936e133eda32d809b188a2]
trunk :
[https://github.com/apache/jackrabbit-oak/commit/6703be860c863ddb96eae01eea5e220710b2ab58]
> Protection against very large queries
> -------------------------------------
>
> Key: OAK-9651
> URL: https://issues.apache.org/jira/browse/OAK-9651
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Reporter: Mohit Kataria
> Assignee: Mohit Kataria
> Priority: Major
> Fix For: 1.42.0
>
>
> There are cases where system runs out of memory because very large queries (5
> MB / around 30'000 lines of text each) were run and QueryStatsMbean consuming
> huge memory.
> We should have some protection against such queries. Options are:
> * We can log a warning if the query is longer than e.g. 100 KB.
> * A query longer than e.g. 1 MB might just throw an exception.
> * The query statistic should probably not collect statistic for such long
> queries. We could shrink the query text in the statistic collection to e.g.
> at most 2 KB per query. Truncating it, or, probably better, only retaining
> the first and last 1 KB.
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