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https://issues.apache.org/jira/browse/IMPALA-8913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16922712#comment-16922712
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ASF subversion and git services commented on IMPALA-8913:
---------------------------------------------------------
Commit f36ea767c8eac608d37dfc954e426a7da2a07251 in impala's branch
refs/heads/master from stiga-huang
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=f36ea76 ]
IMPALA-8913: Add query option to disable hbase row estimation
IMPALA-8058 added a flag, disable_hbase_row_est, in the QueryCtx for
tests to bypass the codes of estimating HBase row stats from HBase RPCs
and fall back to HMS row count stats. This patch exposes it as a query
option.
Tests:
- Replace the usage of disable_hbase_row_est in QueryCtx by the new
query option in tests. Verified relative tests pass as before.
Change-Id: I768ea1f560c5faab74d8772bc8aa9ddefdcf2e10
Reviewed-on: http://gerrit.cloudera.org:8080/14169
Reviewed-by: Quanlong Huang <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Add query option for disabling HBase row estimation
> ---------------------------------------------------
>
> Key: IMPALA-8913
> URL: https://issues.apache.org/jira/browse/IMPALA-8913
> Project: IMPALA
> Issue Type: New Feature
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Major
>
> IMPALA-8058 added a flag, disable_hbase_row_est, in the QueryCtx for tests to
> bypass the codes of estimating HBase row stats from HBase RPCs and fall back
> to HMS row count stats.
> It's useful for point queries on high loaded HBase clusters, where we should
> reduce the #RPCs to HBase.
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