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https://issues.apache.org/jira/browse/HBASE-3040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12914928#action_12914928
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ryan rawson commented on HBASE-3040:
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This looks similar to a different perf bug, perhaps you could try a
fix by using a BufferedInputStream to wrap the other stream and see
what happens? This fixed the issue the other time :-)
> BlockIndex readIndex too slowly in heavy write scenario
> -------------------------------------------------------
>
> Key: HBASE-3040
> URL: https://issues.apache.org/jira/browse/HBASE-3040
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.20.6
> Environment: 1master, 7 region servers, 4 * 7 clients(all clients run
> on region server host), sequential put
> Reporter: andychen
>
> region size is configured with 128M, block size is 64K, the table has 5
> column families
> at the beginning, when region split, master assigns daughters to new region
> servers, new region server open region, readIndex of this region's
> storefile(about 1000 blocks) spent 30~50ms, with the data import region
> server spent more and more time (sometimes up to several seconds) to load
> 1000 block indices
> at right now, we resolve this issue by getting all indices of one hfile
> within one DFS read instead of 1000 reads.
> is there any other better resolution?
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