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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-5086) ClassCastException when filter pushdown is used with a bigint or float column and metadata caching.
Date Sun, 04 Dec 2016 19:21:58 GMT

    [ https://issues.apache.org/jira/browse/DRILL-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15720441#comment-15720441
] 

ASF GitHub Bot commented on DRILL-5086:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/drill/pull/674


> ClassCastException when filter pushdown is used with a bigint or float column and metadata
caching.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: DRILL-5086
>                 URL: https://issues.apache.org/jira/browse/DRILL-5086
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 1.9.0
>            Reporter: Robert Hou
>            Assignee: Parth Chandra
>              Labels: ready-to-commit
>         Attachments: 0_0_1.parquet, 0_0_2.parquet, 0_0_3.parquet, 0_0_4.parquet, 0_0_5.parquet,
drill.parquet_metadata
>
>
> This query results in a ClassCastException when filter pushdown is used with metadata
caching.  The bigint column is being compared with an integer value.
>    0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from orders_parts_metadata
where bigint_id < 1100;
>    Error: SYSTEM ERROR: ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
> To reproduce the problem, put the attached files into a directory.  Then create the metadata:
>    refresh table metadata dfs.`path_to_directory`;
> For example, if you put the files in /drill/testdata/filter/orders_parts_metadata, then
run this sql command
>    refresh table metadata dfs.`/drill/testdata/filter/orders_parts_metadata`;
> A similar problem occurs when a float column is being compared with a double value.
>    0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from orders_parts_metadata
where float_id < 1100.0;
>    Error: SYSTEM ERROR: ClassCastException
> Also when a timestamp column is being compared with a string.
>    0: jdbc:drill:zk=10.10.100.186:5181/drill/rho> select count(\*) from orders_parts_metadata
where timestamp_id < '2016-10-13';
>    Error: SYSTEM ERROR: ClassCastException: java.lang.Integer cannot be cast to java.lang.Long



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