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From "Eugene Koifman (JIRA)" <>
Subject [jira] [Updated] (HIVE-12353) When Compactor fails it calls CompactionTxnHandler.markedCleaned(). it should not.
Date Thu, 21 Jan 2016 14:44:40 GMT


Eugene Koifman updated HIVE-12353:
    Attachment: HIVE-12353.8.patch

> When Compactor fails it calls CompactionTxnHandler.markedCleaned().  it should not.
> -----------------------------------------------------------------------------------
>                 Key: HIVE-12353
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Transactions
>    Affects Versions: 1.0.0
>            Reporter: Eugene Koifman
>            Assignee: Eugene Koifman
>            Priority: Blocker
>         Attachments: HIVE-12353.2.patch, HIVE-12353.3.patch, HIVE-12353.4.patch, HIVE-12353.6.patch,
HIVE-12353.7.patch, HIVE-12353.8.patch, HIVE-12353.patch
> One of the things that this method does is delete entries from TXN_COMPONENTS for partition
that it was trying to compact.
> This causes Aborted transactions in TXNS to become empty according to
> CompactionTxnHandler.cleanEmptyAbortedTxns() which means they can now be deleted.  
> Once they are deleted, data that belongs to these txns is deemed committed...
> We should extend COMPACTION_QUEUE state with 'f' and 's' (failed, success) states.  We
should also not delete then entry from markedCleaned()
> We'll have separate process that cleans 'f' and 's' records after X minutes (or after
> N records for a given partition exist).
> This allows SHOW COMPACTIONS to show some history info and how many times compaction
failed on a given partition (subject to retention interval) so that we don't have to call
markCleaned() on Compactor failures at the same time preventing Compactor to constantly getting
stuck on the same bad partition/table.
> Ideally we'd want to include END_TIME field.

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