[
https://issues.apache.org/jira/browse/HIVE-10755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14940647#comment-14940647
]
Daniel Dai commented on HIVE-10755:
-----------------------------------
The approach should be fine. We also need to avoid appending ids multiple times
to conf to avoid unnecessary warning from
ColumnProjectionUtils.getReadColumnIDs. We shall also add a test case which
cause HIVE-10752. A simple join + foreach should reproduce HIVE-10752:
{code}
A = load '" + COMPLEX_TABLE + "' using
org.apache.hive.hcatalog.pig.HCatLoader();
B = load '" + COMPLEX_TABLE + "' using
org.apache.hive.hcatalog.pig.HCatLoader();
C = join A by name, B by name;
D = foreach C generate B::studentid;
{code}
> Rework on HIVE-5193 to enhance the column oriented table acess
> --------------------------------------------------------------
>
> Key: HIVE-10755
> URL: https://issues.apache.org/jira/browse/HIVE-10755
> Project: Hive
> Issue Type: Sub-task
> Components: HCatalog
> Affects Versions: 1.2.0
> Reporter: Aihua Xu
> Assignee: Aihua Xu
> Fix For: 2.0.0
>
> Attachments: HIVE-10755.patch
>
>
> Add the support of column pruning for column oriented table access which was
> done in HIVE-5193 but was reverted due to the join issue in HIVE-10720.
> In 1.3.0, the patch posted by Viray didn't work, probably due to some jar
> reference. That seems to get fixed and that patch works in 2.0.0 now.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
