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https://issues.apache.org/jira/browse/HBASE-27049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17538559#comment-17538559
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chenfengge commented on HBASE-27049:
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Our performance test shows that decrease memory copy when decompressing data
can increase hbase read performance,especially when cpu is fully loaded.
Maybe we can just create a configuable interface,and use the old way as default
implementation.If someone require better performance,he can apply his own
implementation through configuration.
> Decrease memory copy when decompress data
> -----------------------------------------
>
> Key: HBASE-27049
> URL: https://issues.apache.org/jira/browse/HBASE-27049
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: chenfengge
> Priority: Minor
>
> HBase RegionServer use createDecompressionStream in class
> org.apache.hadoop.hbase.io.compress.Compression, which cause extra memory
> copy during decompression.We can offer interface for block decompression,
> like "void decompress(ByteBuff src, ByteBuff dst);", and offer default
> implementation for all algorithms.
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