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Posted to issues@hive.apache.org by "Zoltan Haindrich (Jira)" <ji...@apache.org> on 2020/06/10 09:01:04 UTC
[jira] [Commented] (HIVE-22412) StatsUtils throw NPE when explain
[ https://issues.apache.org/jira/browse/HIVE-22412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17130431#comment-17130431 ]
Zoltan Haindrich commented on HIVE-22412:
-----------------------------------------
I think you should be using a more recent version... 3.1.2 is the most recent release - and it doesn't contain this bug
> StatsUtils throw NPE when explain
> ---------------------------------
>
> Key: HIVE-22412
> URL: https://issues.apache.org/jira/browse/HIVE-22412
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 1.2.1, 2.0.0, 3.0.0
> Reporter: xiepengjie
> Assignee: xiepengjie
> Priority: Major
>
> The demo like this:
> {code:java}
> drop table if exists explain_npe_map;
> drop table if exists explain_npe_array;
> drop table if exists explain_npe_struct;
> create table explain_npe_map ( c1 map<string, string> );
> create table explain_npe_array ( c1 array<string> );
> create table explain_npe_struct ( c1 struct<name:string, age:int> );
> -- error
> set hive.cbo.enable=false;
> explain select c1 from explain_npe_map where c1 is null;
> explain select c1 from explain_npe_array where c1 is null;
> explain select c1 from explain_npe_struct where c1 is null;
> -- correct
> set hive.cbo.enable=true;
> explain select c1 from explain_npe_map where c1 is null;
> explain select c1 from explain_npe_array where c1 is null;
> explain select c1 from explain_npe_struct where c1 is null;{code}
>
> if the conf 'hive.cbo.enable' set false , NPE will be thrown ; otherwise will not.
> {code:java}
> hive> drop table if exists explain_npe_map;
> OK
> Time taken: 0.063 seconds
> hive> drop table if exists explain_npe_array;
> OK
> Time taken: 0.035 seconds
> hive> drop table if exists explain_npe_struct;
> OK
> Time taken: 0.015 seconds
> hive>
> > create table explain_npe_map ( c1 map<string, string> );
> OK
> Time taken: 0.584 seconds
> hive> create table explain_npe_array ( c1 array<string> );
> OK
> Time taken: 0.216 seconds
> hive> create table explain_npe_struct ( c1 struct<name:string, age:int> );
> OK
> Time taken: 0.17 seconds
> hive>
> > set hive.cbo.enable=false;
> hive> explain select c1 from explain_npe_map where c1 is null;
> FAILED: NullPointerException null
> hive> explain select c1 from explain_npe_array where c1 is null;
> FAILED: NullPointerException null
> hive> explain select c1 from explain_npe_struct where c1 is null;
> FAILED: RuntimeException Error invoking signature method
> hive>
> > set hive.cbo.enable=true;
> hive> explain select c1 from explain_npe_map where c1 is null;
> OK
> STAGE DEPENDENCIES:
> Stage-0 is a root stageSTAGE PLANS:
> Stage: Stage-0
> Fetch Operator
> limit: -1
> Processor Tree:
> TableScan
> alias: explain_npe_map
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Filter Operator
> predicate: false (type: boolean)
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Select Operator
> expressions: c1 (type: map<string,string>)
> outputColumnNames: _col0
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> ListSinkTime taken: 1.593 seconds, Fetched: 20 row(s)
> hive> explain select c1 from explain_npe_array where c1 is null;
> OK
> STAGE DEPENDENCIES:
> Stage-0 is a root stageSTAGE PLANS:
> Stage: Stage-0
> Fetch Operator
> limit: -1
> Processor Tree:
> TableScan
> alias: explain_npe_array
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Filter Operator
> predicate: false (type: boolean)
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Select Operator
> expressions: c1 (type: array<string>)
> outputColumnNames: _col0
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> ListSinkTime taken: 1.969 seconds, Fetched: 20 row(s)
> hive> explain select c1 from explain_npe_struct where c1 is null;
> OK
> STAGE DEPENDENCIES:
> Stage-0 is a root stageSTAGE PLANS:
> Stage: Stage-0
> Fetch Operator
> limit: -1
> Processor Tree:
> TableScan
> alias: explain_npe_struct
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Filter Operator
> predicate: false (type: boolean)
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> Select Operator
> expressions: c1 (type: struct<name:string,age:int>)
> outputColumnNames: _col0
> Statistics: Num rows: 1 Data size: 0 Basic stats: PARTIAL Column stats: NONE
> ListSinkTime taken: 2.932 seconds, Fetched: 20 row(s)
> hive>
> {code}
> ms error like:
> {code:java}
> 2019-10-10 09:11:52,670 ERROR ql.Driver (SessionState.java:printError(1068)) - FAILED: NullPointerException null
> java.lang.NullPointerException
> at org.apache.hadoop.hive.ql.stats.StatsUtils.getSizeOfMap(StatsUtils.java:1045)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.getSizeOfComplexTypes(StatsUtils.java:931)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.getAvgColLenOfVariableLengthTypes(StatsUtils.java:869)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.estimateRowSizeFromSchema(StatsUtils.java:526)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:223)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:136)
> at org.apache.hadoop.hive.ql.stats.StatsUtils.collectStatistics(StatsUtils.java:124)
> at org.apache.hadoop.hive.ql.optimizer.stats.annotation.StatsRulesProcFactory$TableScanStatsRule.process(StatsRulesProcFactory.java:111)
> at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
> at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:95)
> at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:79)
> at org.apache.hadoop.hive.ql.lib.PreOrderWalker.walk(PreOrderWalker.java:56)
> at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:110)
> 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:192)
> at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:10205)
> at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:210)
> at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:227)
> at org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:74)
> at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:227)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:425)
> at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:309)
> at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1153)
> at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1206)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1082)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1072)
> at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:213)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:165)
> at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:376)
> at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:736)
> at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:681)
> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:621)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:498)
> at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> {code}
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