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From "Vikram Dixit K (JIRA)" <>
Subject [jira] [Commented] (HIVE-3891) physical optimizer changes for auto sort-merge join
Date Fri, 01 Mar 2013 05:57:17 GMT


Vikram Dixit K commented on HIVE-3891:

I think all this needs is SizeBasedBigTableSelectorForAutoSMJ to have the following additional


if (parentOp instanceof TableScanOperator) {

<b>else if (parentOp instanceof CommonJoinOperator) {
else {


We shouldn't be taking that operation all the way to the top of the operator tree which is
what is happening. Let me know what you think? 

> physical optimizer changes for auto sort-merge join
> ---------------------------------------------------
>                 Key: HIVE-3891
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Namit Jain
>            Assignee: Namit Jain
>         Attachments: auto_sortmerge_join_1.q, auto_sortmerge_join_1.q.out, hive.3891.1.patch,
hive.3891.2.patch, hive.3891.3.patch, hive.3891.4.patch, hive.3891.5.patch, hive.3891.6.patch,

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