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Posted to dev@hbase.apache.org by "Josh Elser (Jira)" <ji...@apache.org> on 2020/11/12 21:04:00 UTC

[jira] [Created] (HBASE-25278) Add option to toggle CACHE_BLOCKS in count.rb

Josh Elser created HBASE-25278:
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             Summary: Add option to toggle CACHE_BLOCKS in count.rb
                 Key: HBASE-25278
                 URL: https://issues.apache.org/jira/browse/HBASE-25278
             Project: HBase
          Issue Type: New Feature
          Components: shell
            Reporter: Josh Elser
            Assignee: Josh Elser
             Fix For: 3.0.0-alpha-1, 2.4.0


A trick I've found myself doing a couple of times (hat-tip to [~psomogyi]) is to edit table.rb so that the `count` shell command will not instruct RegionServers to not cache any data blocks. This is a quick+dirty way to force a table to be loaded into block cache (i.e. for performance testing).

We can easily add another option to avoid having to edit the ruby files.



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