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Posted to issues@kylin.apache.org by "Zhong Yanghong (JIRA)" <ji...@apache.org> on 2018/09/09 05:54:03 UTC

[jira] [Closed] (KYLIN-3463) Improve optimize job by avoiding creating empty output files on HDFS

     [ https://issues.apache.org/jira/browse/KYLIN-3463?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhong Yanghong closed KYLIN-3463.
---------------------------------

Resolved in release 2.4.1 (2018-09-09)

> Improve optimize job by avoiding creating empty output files on HDFS
> --------------------------------------------------------------------
>
>                 Key: KYLIN-3463
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3463
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Minor
>             Fix For: v2.4.1, v2.5.0
>
>         Attachments: APACHE-KYLIN-3463.patch
>
>
> For steps in an optimize job, like {{FilterRecommendCuboidDataJob}} & {{UpdateOldCuboidShardJob}}, {{MultipleOutputs}} is used to output data into different directories. Therefore, the default output file is empty. {{LazyOutputFormat}} should be used to prevent to create zero-sized default output.



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