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https://issues.apache.org/jira/browse/HIVE-12684?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071257#comment-15071257
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Prasanth Jayachandran commented on HIVE-12684:
----------------------------------------------
Thanks [~leftylev]! I just cherrypicked the commit to branch-1.
> NPE in stats annotation when all values in decimal column are NULLs
> -------------------------------------------------------------------
>
> Key: HIVE-12684
> URL: https://issues.apache.org/jira/browse/HIVE-12684
> Project: Hive
> Issue Type: Bug
> Components: Statistics
> Affects Versions: 1.3.0, 2.0.0, 2.1.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Fix For: 1.3.0, 2.0.0
>
> Attachments: HIVE-12684.1.patch, HIVE-12684.2.patch,
> HIVE-12684.3.patch
>
>
> When all column values are null for a decimal column and when column stats
> exists. AnnotateWithStatistics optimization can throw NPE. Following is the
> exception trace
> {code}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.getColStatistics(StatsUtils.java:712)
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.convertColStats(StatsUtils.java:764)
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.getTableColumnStats(StatsUtils.java:750)
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:197)
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:143)
> at
> org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:131)
> at
> org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$TableScanStatsRule.process(StatsRulesProcFactory.java:114)
> at
> org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:105)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:89)
> at
> org.apache.hadoop.hive.ql.lib.LevelOrderWalker.walk(LevelOrderWalker.java:143)
> at
> org.apache.hadoop.hive.ql.lib.LevelOrderWalker.startWalking(LevelOrderWalker.java:122)
> at
> org.apache.hadoop.hive.ql.optimizer.stats.annotation.AnnotateWithStatistics.transform(AnnotateWithStatistics.java:78)
> at
> org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:228)
> at
> org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10156)
> at
> org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:225)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:237)
> at
> org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at
> org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:237)
> {code}
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