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https://issues.apache.org/jira/browse/HBASE-11446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14051112#comment-14051112
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Yi Liu commented on HBASE-11446:
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Thanks [~apurtell], it's more better.
> Reduce the frequency of RNG calls in SecureWALCellCodec#EncryptedKvEncoder
> --------------------------------------------------------------------------
>
> Key: HBASE-11446
> URL: https://issues.apache.org/jira/browse/HBASE-11446
> Project: HBase
> Issue Type: Improvement
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Fix For: 0.99.0, 0.98.4
>
> Attachments: HBASE-11446.patch, HBASE-11446.patch, HBASE-11446.patch
>
>
> By reducing the frequency of RNG calls in
> SecureWALCellCodec#EncryptedKvEncoder we can save 37% of on CPU time in that
> method and 3% of total on CPU time during an ingest test. WAL processing is a
> critical latency sensitive area.
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