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https://issues.apache.org/jira/browse/PHOENIX-2179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Taylor updated PHOENIX-2179:
----------------------------------
Labels: Tracing (was: )
> Trace output contains extremely large number of readBlock rows
> --------------------------------------------------------------
>
> Key: PHOENIX-2179
> URL: https://issues.apache.org/jira/browse/PHOENIX-2179
> Project: Phoenix
> Issue Type: Bug
> Reporter: Mujtaba Chohan
> Priority: Minor
> Labels: Tracing
>
> As an example, trace over a 10M row table using count * query produces over
> 250K rows for HFileReaderV2.readBlock.
> {code}
> select count(*), description from SYSTEM.TRACING_STATS WHERE TRACE_ID=X group
> by description;
> +------------------------------------------+------------------------------------------+
> | COUNT(1) | DESCRIPTION
> |
> +------------------------------------------+------------------------------------------+
> | 3 | ClientService.Scan
> |
> | 253879 | HFileReaderV2.readBlock
> |
> | 1 | Scanner opened on server
> |
> +------------------------------------------+------------------------------------------+
> {code}
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