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Date: Tue, 28 Apr 2015 13:54:05 +0000 (UTC)
From: "Hive QA (JIRA)" <jira@apache.org>
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Message-ID: <JIRA.12824442.1430174883000.7250.1430229245958@Atlassian.JIRA>
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 <JIRA.12824442.1430174883294@arcas>
Subject: [jira] [Commented] (HIVE-10507) Expose  RetryingMetastoreClient to
 other external users of metastore client like Flume and Storm.
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    [ https://issues.apache.org/jira/browse/HIVE-10507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517045#comment-14517045 ] 

Hive QA commented on HIVE-10507:
--------------------------------


{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12728609/HIVE-10507.1.patch

{color:red}ERROR:{color} -1 due to 14 failed/errored test(s), 8818 tests executed
*Failed tests:*
{noformat}
TestMinimrCliDriver-bucketmapjoin6.q-constprog_partitioner.q-infer_bucket_sort_dyn_part.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-external_table_with_space_in_location_path.q-infer_bucket_sort_merge.q-auto_sortmerge_join_16.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-groupby2.q-import_exported_table.q-bucketizedhiveinputformat.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-index_bitmap3.q-stats_counter_partitioned.q-temp_table_external.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-infer_bucket_sort_map_operators.q-join1.q-bucketmapjoin7.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-infer_bucket_sort_num_buckets.q-disable_merge_for_bucketing.q-uber_reduce.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-infer_bucket_sort_reducers_power_two.q-scriptfile1.q-scriptfile1_win.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-leftsemijoin_mr.q-load_hdfs_file_with_space_in_the_name.q-root_dir_external_table.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-list_bucket_dml_10.q-bucket_num_reducers.q-bucket6.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-load_fs2.q-file_with_header_footer.q-ql_rewrite_gbtoidx_cbo_1.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-parallel_orderby.q-reduce_deduplicate.q-ql_rewrite_gbtoidx_cbo_2.q-and-1-more - did not produce a TEST-*.xml file
TestMinimrCliDriver-ql_rewrite_gbtoidx.q-smb_mapjoin_8.q - did not produce a TEST-*.xml file
TestMinimrCliDriver-schemeAuthority2.q-bucket4.q-input16_cc.q-and-1-more - did not produce a TEST-*.xml file
org.apache.hive.jdbc.TestSSL.testSSLConnectionWithProperty
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/3624/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/3624/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-3624/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 14 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12728609 - PreCommit-HIVE-TRUNK-Build

> Expose  RetryingMetastoreClient to other external users of metastore client like Flume and Storm.
> -------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-10507
>                 URL: https://issues.apache.org/jira/browse/HIVE-10507
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Hari Sankar Sivarama Subramaniyan
>            Assignee: Hari Sankar Sivarama Subramaniyan
>         Attachments: HIVE-10507.1.patch
>
>
> HiveMetastoreClient is now being relied upon by external clients like Flume and Storm for streaming.
> When the thrift connection between MetaStoreClient and the meta store is broken (due to intermittent network issues or restarting of metastore) the Metastore does not handle the connection error and automatically re-establish the connection. Currently the client process needs to be restarted to re-establish the connection.
> The request here is consider supporting the following behavior: For each API invocation on the MetastoreClient, it should try to restablish the connection (if needed) once. And if that does not work out then throw a specific exception indicating the same. The client could then handle the issue by retrying the same API after some delay. By catching the specific connection exception, the client could decide how many times to retry before aborting.
> Hive does this internally using RetryingMetastoreClient. This jira is suppose to expose this mechanism to other users of that interface. This is useful for users of this interface, and from metastore HA point of view.


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