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https://issues.apache.org/jira/browse/HIVE-12620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15052899#comment-15052899
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Eugene Koifman commented on HIVE-12620:
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all failed test have age > 5
> Misc improvement to Acid module
> -------------------------------
>
> Key: HIVE-12620
> URL: https://issues.apache.org/jira/browse/HIVE-12620
> Project: Hive
> Issue Type: Bug
> Components: Transactions
> Affects Versions: 1.3.0
> Reporter: Eugene Koifman
> Assignee: Eugene Koifman
> Attachments: HIVE-12620.patch
>
>
> # DbLockManger.unlock() - if this fails (due to no such lock in turn due to
> timeout) the lock is not removed from DbLockManger internal tracking
> # Add logic to DBLockManager to detect if there is attempt to interleave
> transactions or locks from different statements for read-only auto commit mode
> # TxnHandler.checkLock() can use 1 connection instead of 2
> # TxnHandler.timeOutLocks() - refactor so that it can log which locks were
> expired (simplifies debugging)
> # TxnHandler#getTxnIdFromLockId() - include lock id if it's not found
> # TxnHandler#checkRetryable() - log exception it saw
> # TxnHandler.lock() - throw new MetaException("Couldn't find a lock we just
> created!"); - include lockid
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