[jira] [Updated] (HIVE-10940) HiveInputFormat::pushFilters serializes PPD objects for each getRecordReader call

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-10940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Shelukhin updated HIVE-10940:
------------------------------------
    Attachment: HIVE-10940.patch

trunk patch

> HiveInputFormat::pushFilters serializes PPD objects for each getRecordReader call
> ---------------------------------------------------------------------------------
>
>                 Key: HIVE-10940
>                 URL: https://issues.apache.org/jira/browse/HIVE-10940
>             Project: Hive
>          Issue Type: Bug
>          Components: File Formats
>    Affects Versions: 1.2.0
>            Reporter: Gopal V
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-10940.patch
>
>
> {code}
>     String filterText = filterExpr.getExprString();
>     String filterExprSerialized = Utilities.serializeExpression(filterExpr);
> {code}
> the serializeExpression initializes Kryo and produces a new packed object for every split.
> HiveInputFormat::getRecordReader -> pushProjectionAndFilters -> pushFilters.
> And Kryo is very slow to do this for a large filter clause.



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