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From "Zelaine Fong (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (DRILL-5086) ClassCastException when filter pushdown is used with a bigint or float column.
Date Thu, 01 Dec 2016 00:27:58 GMT

     [ https://issues.apache.org/jira/browse/DRILL-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Zelaine Fong reassigned DRILL-5086:
-----------------------------------

    Assignee: Parth Chandra  (was: Aman Sinha)

[~parthc] - can you code review.  Thanks.

> ClassCastException when filter pushdown is used with a bigint or float column.
> ------------------------------------------------------------------------------
>
>                 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
>         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.  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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