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From "Ashutosh Chauhan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-5272) Column statistics on a invalid column name results in IndexOutOfBoundsException
Date Mon, 23 Sep 2013 08:08:02 GMT

    [ https://issues.apache.org/jira/browse/HIVE-5272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13774367#comment-13774367
] 

Ashutosh Chauhan commented on HIVE-5272:
----------------------------------------

[~prasanth_j] If you have already run tests, can you post the results here?
                
> Column statistics on a invalid column name results in IndexOutOfBoundsException
> -------------------------------------------------------------------------------
>
>                 Key: HIVE-5272
>                 URL: https://issues.apache.org/jira/browse/HIVE-5272
>             Project: Hive
>          Issue Type: Bug
>          Components: Statistics
>    Affects Versions: 0.13.0
>            Reporter: Prasanth J
>            Assignee: Prasanth J
>              Labels: statistics
>             Fix For: 0.13.0
>
>         Attachments: HIVE-5272.1.patch
>
>
> When invalid column name is specified for column statistics IndexOutOfBoundsException
is thrown. 
> {code}hive> analyze table customer_staging compute statistics for columns c_first_name,
invalid_name, c_customer_sk;
> FAILED: IndexOutOfBoundsException Index: 2, Size: 1{code}
> If the invalid column name appears at first or last then INVALID_COLUMN_REFERENCE is
thrown at query planning stage. But if the invalid column name appears somewhere in the middle
of column lists then IndexOutOfBoundsException is thrown at semantic analysis step. The problem
is with getTableColumnType() and getPartitionColumnType() methods. The following segment 
> {code}    for (int i=0; i <numCols; i++) {
>       colName = colNames.get(i);
>       for (FieldSchema col: cols) {
>         if (colName.equalsIgnoreCase(col.getName())) {
>           colTypes.add(i, new String(col.getType()));
>         }
>       }
>     }{code}
> is the reason for it. If the invalid column names appears in the middle of column list
then the equalsIgnoreCase() skips the invalid name and increments the i. Since the list is
not initialized it results in exception. 

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