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https://issues.apache.org/jira/browse/HIVE-4293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13862710#comment-13862710
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Navis commented on HIVE-4293:
-----------------------------
Could anyone review this? It's a nasty bug removing valid predicates.
> Predicates following UDTF operator are removed by PPD
> -----------------------------------------------------
>
> Key: HIVE-4293
> URL: https://issues.apache.org/jira/browse/HIVE-4293
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Navis
> Assignee: Navis
> Priority: Critical
> Attachments: D9933.6.patch, HIVE-4293.7.patch.txt,
> HIVE-4293.8.patch.txt, HIVE-4293.D9933.1.patch, HIVE-4293.D9933.2.patch,
> HIVE-4293.D9933.3.patch, HIVE-4293.D9933.4.patch, HIVE-4293.D9933.5.patch
>
>
> For example,
> {noformat}
> explain SELECT value from (
> select explode(array(key, value)) as (value) from (
> select * FROM src WHERE key > 200
> ) A
> ) B WHERE value > 300
> ;
> {noformat}
> Makes plan like this, removing last predicates
> {noformat}
> TableScan
> alias: src
> Filter Operator
> predicate:
> expr: (key > 200.0)
> type: boolean
> Select Operator
> expressions:
> expr: array(key,value)
> type: array<string>
> outputColumnNames: _col0
> UDTF Operator
> function name: explode
> Select Operator
> expressions:
> expr: col
> type: string
> outputColumnNames: _col0
> File Output Operator
> compressed: false
> GlobalTableId: 0
> table:
> input format: org.apache.hadoop.mapred.TextInputFormat
> output format:
> org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
> {noformat}
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