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https://issues.apache.org/jira/browse/ACCUMULO-1534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13805999#comment-13805999
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John Vines commented on ACCUMULO-1534:
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bq. Another suggestion was to use snappy. I've only seen this happen with gzip,
so that might be a viable alternative
That is what leads me to believe it is upstream. If changing the codec is all
it takes, it sounds like it's a bug with the codec.
> Tablet Server using large number of decompressors during a scan
> ---------------------------------------------------------------
>
> Key: ACCUMULO-1534
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1534
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.4.3
> Reporter: Mike Drob
> Fix For: 1.5.1, 1.6.0
>
>
> I believe this issue is similar to ACCUMULO-665. We've run into a situation
> where a complex iterator tree creates a large number of decompressors from
> the underlying CodecPool for serving scans. Each decompressor holds on to a
> large buffer and the total volume ends up killing the tserver.
> We have verified that turning off compression makes this problem go away.
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