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https://issues.apache.org/jira/browse/HIVE-2925?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phabricator updated HIVE-2925:
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Attachment: HIVE-2925.D2607.2.patch
navis updated the revision "HIVE-2925 [jira] Support non-MR fetching for simple
queries with select/limit/filter operations only".
Reviewers: JIRA
1. Fixed handling of predicates pushed-down to TS
2. Added configuration for disabling aggresive fetch task conversion
3. Fixed duplicated adding Partitions to ReadEntity set
Seemed not yet complete.
REVISION DETAIL
https://reviews.facebook.net/D2607
AFFECTED FILES
common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
ql/src/java/org/apache/hadoop/hive/ql/Driver.java
ql/src/java/org/apache/hadoop/hive/ql/exec/FetchOperator.java
ql/src/java/org/apache/hadoop/hive/ql/exec/FetchTask.java
ql/src/java/org/apache/hadoop/hive/ql/io/HiveInputFormat.java
ql/src/java/org/apache/hadoop/hive/ql/parse/QB.java
ql/src/java/org/apache/hadoop/hive/ql/parse/QBParseInfo.java
ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
ql/src/java/org/apache/hadoop/hive/ql/plan/FetchWork.java
ql/src/test/queries/clientpositive/nonmr_fetch.q
ql/src/test/results/clientpositive/nonmr_fetch.q.out
> Support non-MR fetching for simple queries with select/limit/filter
> operations only
> -----------------------------------------------------------------------------------
>
> Key: HIVE-2925
> URL: https://issues.apache.org/jira/browse/HIVE-2925
> Project: Hive
> Issue Type: Improvement
> Reporter: Navis
> Assignee: Navis
> Priority: Trivial
> Attachments: HIVE-2925.D2607.1.patch, HIVE-2925.D2607.2.patch
>
>
> It's trivial but frequently asked by end-users. Currently, select queries
> with simple conditions or limit should run MR job which takes some time
> especially for big tables, making the people irritated.
> For that kind of simple queries, using fetch task would make them happy.
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