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https://issues.apache.org/jira/browse/HIVE-12620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eugene Koifman updated HIVE-12620:
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Description:
# 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
was:
# 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
> 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
>
> # 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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