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Posted to dev@hive.apache.org by "Hive QA (JIRA)" <ji...@apache.org> on 2015/01/23 17:30:35 UTC
[jira] [Commented] (HIVE-9447) Metastore: inefficient Oracle query
for removing unused column descriptors when add/drop table/partition
[ https://issues.apache.org/jira/browse/HIVE-9447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14289476#comment-14289476 ]
Hive QA commented on HIVE-9447:
-------------------------------
{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/12694059/HIVE-9447.1.patch
{color:red}ERROR:{color} -1 due to 63 failed/errored test(s), 7347 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_archive_excludeHadoop20
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_archive_multi
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join11
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join12
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join13
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join27
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join4
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join5
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_join8
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cbo_simple_select
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cbo_subq_in
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_column_access_stats
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_constantPropagateForSubQuery
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_correlationoptimizer1
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_correlationoptimizer6
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_correlationoptimizer8
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_explain_logical
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_filter_join_breaktask
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_filter_join_breaktask2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_groupby_sort_1_23
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_groupby_sort_skew_1_23
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_metadataOnlyOptimizer
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_metadataonly1
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ppd_gby2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ppd_join_filter
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ppd_outer_join5
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ppd_union_view
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ppd_vc
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_rcfile_union
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_smb_mapjoin_25
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_in
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_in_having
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_notin
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_notin_having
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_subquery_views
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_table_access_keys_stats
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union24
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union28
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union30
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_null
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_10
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_5
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_6_subq
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_8
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_union_remove_9
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_vector_decimal_mapjoin
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_vector_mapjoin_reduce
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_cbo_simple_select
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_cbo_subq_in
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_dynamic_partition_pruning
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_dynamic_partition_pruning_2
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_filter_join_breaktask
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_filter_join_breaktask2
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_mrr
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_subquery_in
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vector_decimal_mapjoin
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vector_mapjoin_reduce
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_vectorized_dynamic_partition_pruning
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_bucket5
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_constprog_partitioner
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_ql_rewrite_gbtoidx_cbo_1
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_ql_rewrite_gbtoidx_cbo_2
{noformat}
Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2493/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-TRUNK-Build/2493/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-TRUNK-Build-2493/
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: 63 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12694059 - PreCommit-HIVE-TRUNK-Build
> Metastore: inefficient Oracle query for removing unused column descriptors when add/drop table/partition
> --------------------------------------------------------------------------------------------------------
>
> Key: HIVE-9447
> URL: https://issues.apache.org/jira/browse/HIVE-9447
> Project: Hive
> Issue Type: Improvement
> Components: Metastore
> Affects Versions: 0.14.0
> Reporter: Selina Zhang
> Assignee: Selina Zhang
> Attachments: HIVE-9447.1.patch
>
> Original Estimate: 3h
> Remaining Estimate: 3h
>
> Metastore needs removing unused column descriptors when drop/add partitions or tables. For query the unused column descriptor, the current implementation utilizes datanuleus' range function, which basically equals LIMIT syntax. However, Oracle does not support LIMIT, the query is converted as
> {quote}
> SQL> SELECT * FROM (SELECT subq.*,ROWNUM rn FROM (SELECT
> 'org.apache.hadoop.hive.metastore.model.MStorageDescriptor' AS
> NUCLEUS_TYPE,A0.INPUT_FORMAT,A0.IS_COMPRESSED,A0.IS_STOREDASSUBDIRECTORIES,A0.LOCATION,
> A0.NUM_BUCKETS,A0.OUTPUT_FORMAT,A0.SD_ID FROM drhcat.SDS A0
> WHERE A0.CD_ID = ? ) subq ) WHERE rn <= 1;
> {quote}
> Given that CD_ID is not very selective, this query may have to access large amount of rows (depends how many partitions the table has, millions of rows in our case). Metastore may become unresponsive because of this.
> Since Metastore only needs to know if the specific CD_ID is referenced in SDS table and does not need access the whole row. We can use
> {quote}
> select count(1) from SDS where SDS.CD_ID=?
> {quote}
> CD_ID is index column, the above query will do range scan for index, which is faster.
> For other DBs support LIMIT syntax such as MySQL, this problem does not exist. However, the new query does not hurt.
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