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https://issues.apache.org/jira/browse/HIVE-13249?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15271113#comment-15271113
 ] 

Wei Zheng commented on HIVE-13249:
----------------------------------

{code}
Test Name
Duration
Age
 
org.apache.hadoop.hive.llap.daemon.impl.TestTaskExecutorService.testPreemptionQueueComparator
  5 sec   1
 
org.apache.hadoop.hive.llap.tezplugins.TestLlapTaskSchedulerService.testDelayedLocalityNodeCommErrorImmediateAllocation
        10 sec  2
 
org.apache.hadoop.hive.llap.daemon.impl.comparator.TestShortestJobFirstComparator.testWaitQueueComparatorWithinDagPriority
     5 sec   3
 
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver_encryption_select_read_only_encrypted_tbl
  1 min 26 sec    4
 
org.apache.hadoop.hive.metastore.TestHiveMetaStorePartitionSpecs.testFetchingPartitionsWithDifferentSchemas
    3 sec   8
 
org.apache.hadoop.hive.metastore.TestHiveMetaStorePartitionSpecs.testAddPartitions
     3 sec   8
 
org.apache.hadoop.hive.metastore.TestHiveMetaStoreGetMetaConf.testGetMetaConfDefault
   10 sec  9
 
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver_encryption_insert_partition_static
 1 min 58 sec    10
 org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_selectindate    13 sec  
14
 org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_avrocountemptytbl       
10 sec  14
 org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_order_null      36 sec  
14
 
org.apache.hive.hcatalog.api.repl.commands.TestCommands.org.apache.hive.hcatalog.api.repl.commands.TestCommands
        21 sec  14
 
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver_encryption_join_with_different_encryption_keys
     1 min 31 sec    14
 
org.apache.hive.minikdc.TestHiveAuthFactory.testStartTokenManagerForMemoryTokenStore
   1.8 sec 14
 
org.apache.hive.minikdc.TestHiveAuthFactory.testStartTokenManagerForDBTokenStore
       0.34 sec        14
 
org.apache.hadoop.hive.metastore.TestHiveMetaStorePartitionSpecs.testGetPartitionSpecs_WithAndWithoutPartitionGrouping
 3.5 sec 14
 org.apache.hive.minikdc.TestMiniHiveKdc.testLogin      1 min 20 sec    14
 
org.apache.hadoop.hive.cli.TestMiniSparkOnYarnCliDriver.testCliDriver_index_bitmap3
    8.4 sec 14
 
org.apache.hadoop.hive.cli.TestMinimrCliDriver.org.apache.hadoop.hive.cli.TestMinimrCliDriver
  57 sec  14
{code}

> 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-13249.2.patch, 
> HIVE-13249.3.patch, HIVE-13249.4.patch, HIVE-13249.5.patch, HIVE-13249.6.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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