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https://issues.apache.org/jira/browse/HIVE-1648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928733#action_12928733
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Namit Jain commented on HIVE-1648:
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getOuterQueryLimit is not used correctly.
qb maintains a mapping of limit per destination
case HiveParser.TOK_LIMIT:
qbp.setDestLimit(ctx_1.dest, new Integer(ast.getChild(0).getText()));
break;
Since you are browsing the input tables, you dont care about the destination.
Go over:
private final HashMap<String, Integer> destToLimit;
in QBParseInfo.
If that is not-empty, do not gather stats
> Automatically gathering stats when reading a table/partition
> ------------------------------------------------------------
>
> Key: HIVE-1648
> URL: https://issues.apache.org/jira/browse/HIVE-1648
> Project: Hive
> Issue Type: Sub-task
> Reporter: Ning Zhang
> Attachments: HIVE-1648.patch
>
>
> HIVE-1361 introduces a new command 'ANALYZE TABLE T COMPUTE STATISTICS' to
> gathering stats. This requires additional scan of the data. Stats gathering
> can be piggy-backed on TableScanOperator whenever a table/partition is
> scanned (given not LIMIT operator).
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