[jira] [Commented] (KYLIN-3320) CubeStatsReader cannot print stats properly for some cube

["Ma Gang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KYLIN-3320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16415063#comment-16415063 ] 

Ma Gang commented on KYLIN-3320:
--------------------------------

attach the patch, this is caused by the code:
{code:java}
// CubeStatsReader.printCuboidInfoTree() method
List<Long> children = scheduler.getSpanningCuboid(cuboidID);
Collections.sort(children);{code}
the returned cuboid list is immutable for TreeCuboidScheduler, the Collections.sort() will cause exception.

the fix is return a copy cuboid list from the TreeCuboidScheduler

> CubeStatsReader cannot print stats properly for some cube 
> ----------------------------------------------------------
>
>                 Key: KYLIN-3320
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3320
>             Project: Kylin
>          Issue Type: Improvement
>          Components: Tools, Build and Test
>            Reporter: Ma Gang
>            Assignee: Ma Gang
>            Priority: Minor
>         Attachments: fix_KYLIN-3320.patch
>
>
> For the cubes that have cuboid_bytes set in the CubeInstance, the cuboid stats cannot print properly using tool CubeStatsReader



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