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https://issues.apache.org/jira/browse/HBASE-11331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14112523#comment-14112523
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Nick Dimiduk commented on HBASE-11331:
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Quick update: I've hit an ArrayIndexOutOfBoundsException while running a mixed
workload via LTT. Investigating.
> [blockcache] lazy block decompression
> -------------------------------------
>
> Key: HBASE-11331
> URL: https://issues.apache.org/jira/browse/HBASE-11331
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Fix For: 0.99.0, 2.0.0, 0.98.7
>
> Attachments: HBASE-11331.00.patch, HBASE-11331.01.patch,
> HBASE-11331.02.patch, HBASE-11331.03.patch, HBASE-11331.04.patch,
> HBASE-11331.05-0.98.patch, HBASE-11331.05.patch,
> HBASE-11331LazyBlockDecompressperfcompare.pdf,
> hbase-hbase-master-hor17n36.gq1.ygridcore.net.log, lazy-decompress.02.0.pdf,
> lazy-decompress.02.1.json, lazy-decompress.02.1.pdf, v03-20g-045g-false.pdf,
> v03-20g-045g-true-16h.pdf, v03-20g-045g-true.pdf
>
>
> Maintaining data in its compressed form in the block cache will greatly
> increase our effective blockcache size and should show a meaning improvement
> in cache hit rates in well designed applications. The idea here is to lazily
> decompress/decrypt blocks when they're consumed, rather than as soon as
> they're pulled off of disk.
> This is related to but less invasive than HBASE-8894.
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