[ 
https://issues.apache.org/jira/browse/HIVE-18279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16292037#comment-16292037
 ] 

Hive QA commented on HIVE-18279:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12902099/HIVE-18279.1.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 26 failed/errored test(s), 11527 tests 
executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestBlobstoreCliDriver.testCliDriver[insert_empty_into_blobstore]
 (batchId=249)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_join25] (batchId=72)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_sortmerge_join_2] 
(batchId=48)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[avro_partitioned] 
(batchId=3)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[columnStatsUpdateForStatsOptimizer_2]
 (batchId=29)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[constGby] (batchId=9)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[fileformat_mix] 
(batchId=55)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[input24] (batchId=44)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[mapjoin_hook] 
(batchId=12)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[ppd_join5] (batchId=35)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[truncate_table] 
(batchId=79)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[bucket_map_join_tez1]
 (batchId=170)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[bucketsortoptimize_insert_2]
 (batchId=152)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[hybridgrace_hashjoin_2]
 (batchId=157)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[insert_values_orig_table_use_metadata]
 (batchId=165)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid] 
(batchId=169)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[llap_acid_fast]
 (batchId=160)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[quotedid_smb]
 (batchId=157)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[sysdb] 
(batchId=160)
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testCliDriver[authorization_part]
 (batchId=93)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[auto_sortmerge_join_10]
 (batchId=138)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[bucketsortoptimize_insert_7]
 (batchId=128)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[ppd_join5] 
(batchId=120)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[subquery_multi] 
(batchId=113)
org.apache.hadoop.hive.cli.TestSparkPerfCliDriver.testCliDriver[query39] 
(batchId=248)
org.apache.hadoop.hive.ql.parse.TestReplicationScenarios.testConstraints 
(batchId=226)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/8252/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/8252/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-8252/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.YetusPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 26 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12902099 - PreCommit-HIVE-Build

> Incorrect condition in StatsOpimizer
> ------------------------------------
>
>                 Key: HIVE-18279
>                 URL: https://issues.apache.org/jira/browse/HIVE-18279
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Oleksiy Sayankin
>            Assignee: Oleksiy Sayankin
>             Fix For: 3.0.0
>
>         Attachments: HIVE-18279.1.patch
>
>
> At the moment {{StatsOpimizer}} has code
> {code}
>         if (rowCnt == null) {
>           // if rowCnt < 1 than its either empty table or table on which 
> stats are not
>           //  computed We assume the worse and don't attempt to optimize.
>           Logger.debug("Table doesn't have up to date stats " + 
> tbl.getTableName());
>           rowCnt = null;
>         }
> {code}
> in method {{private Long getRowCnt()}}. Condition 
> {code}
> if (rowCnt == null) {
> {code}
> should be changed to 
> {code}
> if (rowCnt == null || rowCnt == 0) {
> {code}
> because 0 value also means that table stats may not be computed.



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