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From "Venkatesh Seetharam (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FALCON-143) Enable Late data handling for hive tables
Date Fri, 01 Nov 2013 04:41:17 GMT

    [ https://issues.apache.org/jira/browse/FALCON-143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13811036#comment-13811036
] 

Venkatesh Seetharam commented on FALCON-143:
--------------------------------------------

Thanks [~sriksun] for reviewing the patches.

bq. AbstractRerunHandler, LateRerunEvent, RetryHandler: since the number of parameters is
down to 7, can the checkstyle be re-enabled ?
Done.

bq. I see two properties being added to the coord: falconFeedStorageType, falconInputFeedStorageTypes
in OozieFeedMapper. They seem to hold similar values. Are they redundant, if so can we avoid?
They are not the same and are used in different contexts. 
* falconFeedStorageType is used in FeedEvictor and FeedReplicator for a particuler feed in
question
* falconInputFeedStorageTypes is used in LateDataHandler - This holds the storage type for
each input feed in a given process

> Enable Late data handling for hive tables
> -----------------------------------------
>
>                 Key: FALCON-143
>                 URL: https://issues.apache.org/jira/browse/FALCON-143
>             Project: Falcon
>          Issue Type: Sub-task
>    Affects Versions: 0.3
>            Reporter: Venkatesh Seetharam
>            Assignee: Venkatesh Seetharam
>         Attachments: FALCON-143-r0.patch, FALCON-143.patch
>
>
> HCat nor Hive APIs expose internal stats about a given partition. The only way to get
the partition size is to get the location of the partition on HDFS and then use globStatus
and contentSummary APIs. 
> With the addition of HIVE-5317, this is going to get more complicated with deltas and
minor and major compactions with no locking.
> Need to work with hive to see if there will be an API or Falcon needs to understand the
structure of the layout of the data on the file system.



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