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https://issues.apache.org/jira/browse/HIVE-13249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei Zheng updated HIVE-13249:
-----------------------------
Attachment: HIVE-13249.11.patch
Patch 11 moved two tests TestCompactionTxnHandler.java and TestTxnHandler.java
from metastore/src/test/org/apache/hadoop/hive/metastore/txn/ to
ql/src/test/org/apache/hadoop/hive/metastore/txn/
The reason is due to the change in TxnHandler.openTxns, the class
"org.apache.hadoop.hive.ql.txn.AcidOpenTxnsCounterService" in ql package needs
to be loaded from metastore package. This is OK during runtime, when we have
hive-exec.jar that's needed for this. But for unit test things are different.
We don't have the jar from which to load the class. So the solution is to move
the affected unit test classes from metastore directory to ql directory, while
they still belong to metastore package.
> Hard upper bound on number of open transactions
> -----------------------------------------------
>
> Key: HIVE-13249
> URL: https://issues.apache.org/jira/browse/HIVE-13249
> Project: Hive
> Issue Type: Improvement
> Components: Transactions
> Affects Versions: 2.0.0
> Reporter: Wei Zheng
> Assignee: Wei Zheng
> Attachments: HIVE-13249.1.patch, HIVE-13249.10.patch,
> HIVE-13249.11.patch, HIVE-13249.2.patch, HIVE-13249.3.patch,
> HIVE-13249.4.patch, HIVE-13249.5.patch, HIVE-13249.6.patch,
> HIVE-13249.7.patch, HIVE-13249.8.patch, HIVE-13249.9.patch
>
>
> We need to have a safeguard by adding an upper bound for open transactions to
> avoid huge number of open-transaction requests, usually due to improper
> configuration of clients such as Storm.
> Once that limit is reached, clients will start failing.
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