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From "Slava Markeyev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-9185) NPE in ColumnPruner pruneReduceSinkOperator when
Date Sun, 21 Dec 2014 01:27:13 GMT
Slava Markeyev created HIVE-9185:
------------------------------------

             Summary: NPE in ColumnPruner pruneReduceSinkOperator when 
                 Key: HIVE-9185
                 URL: https://issues.apache.org/jira/browse/HIVE-9185
             Project: Hive
          Issue Type: Bug
          Components: Query Processor
    Affects Versions: 0.13.1
            Reporter: Slava Markeyev


When nm is null reverseLookup(outputCol) is called which also returns null for the outputColumn
lookup.

Query:
{code}
SELECT session_aggregate.app_frequency AS number_sessions, COUNT(session_aggregate.s) AS users
FROM (
    SELECT session_info.s, MAX(session_info.session_number) AS app_frequency
    FROM (
        SELECT kt_session(calc_session.s, calc_session.evt_lst,2) AS (s, session_number, session_length)
        FROM (
            SELECT session_set.s, collect_set(session_set.timestamps) evt_lst
            FROM (
                SELECT s, evt.utc_timestamp AS timestamps
                FROM event evt
                WHERE month = 201412
            ) session_set
        GROUP BY session_set.s
        ) calc_session
    ORDER BY s,session_number DESC
    )session_info
GROUP BY session_info.s
)session_aggregate
GROUP BY session_aggregate.app_frequency
{code}


Trace log on explain of query:
{code}
14/12/21 01:10:41 INFO parse.ParseDriver: Parsing command: explain SELECT session_aggregate.app_frequency
AS number_sessions, COUNT(session_aggregate.s) AS users
FROM (
    SELECT session_info.s, MAX(session_info.session_number) AS app_frequency
    FROM (
        SELECT kt_session(calc_session.s, calc_session.evt_lst,2) AS (s, session_number, session_length)
        FROM (
            SELECT session_set.s, collect_set(session_set.timestamps) evt_lst
            FROM (
                SELECT s, evt.utc_timestamp AS timestamps
                FROM event evt
                WHERE month = 201412
            ) session_set
        GROUP BY session_set.s
        ) calc_session
    ORDER BY s,session_number DESC
    )session_info
GROUP BY session_info.s
)session_aggregate
GROUP BY session_aggregate.app_frequency
14/12/21 01:10:41 INFO parse.ParseDriver: Parse Completed
14/12/21 01:10:41 INFO log.PerfLogger: </PERFLOG method=parse start=1419124241784 end=1419124241810
duration=26 from=org.apache.hadoop.hive.ql.Driver>
14/12/21 01:10:41 INFO log.PerfLogger: <PERFLOG method=semanticAnalyze from=org.apache.hadoop.hive.ql.Driver>
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Starting Semantic Analysis
14/12/21 01:10:41 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: collect_set
14/12/21 01:10:41 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: kt_session
14/12/21 01:10:41 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: MAX
14/12/21 01:10:41 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: COUNT
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Completed phase 1 of Semantic Analysis
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for source tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for subqueries
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for source tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for subqueries
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for source tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for subqueries
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for source tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for subqueries
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for source tables
14/12/21 01:10:41 WARN conf.Configuration: org.apache.hadoop.hive.conf.LoopingByteArrayInputStream@52b84700:an
attempt to override final parameter: mapred.reduce.tasks.speculative.execution;  Ignoring.
14/12/21 01:10:41 DEBUG hive.log: DDL: struct event { i64 utc_timestamp, string type, string
s, string n, i32 v, i32 l, string st1, string st2, string st3, string json_data, string ts}
14/12/21 01:10:41 DEBUG hive.log: DDL: struct event { i64 utc_timestamp, string type, string
s, string n, i32 v, i32 l, string st1, string st2, string st3, string json_data, string ts}
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for subqueries
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for destination tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for destination tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for destination tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for destination tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Get metadata for destination tables
14/12/21 01:10:41 INFO parse.SemanticAnalyzer: Completed getting MetaData in Semantic Analysis
14/12/21 01:10:42 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: collect_set
14/12/21 01:10:42 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: MAX
14/12/21 01:10:42 DEBUG exec.FunctionRegistry: Looking up GenericUDAF: COUNT
14/12/21 01:10:42 DEBUG lazy.LazySimpleSerDe: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
initialized with: columnNames=[_col0, _col1] columnTypes=[int, bigint] separator=[[B@45045faa]
nullstring=\N lastColumnTakesRest=false
14/12/21 01:10:42 DEBUG lazy.LazySimpleSerDe: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
initialized with: columnNames=[_col0, _col1] columnTypes=[int, bigint] separator=[[B@9fa27e9]
nullstring=\N lastColumnTakesRest=false
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for FS(22)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(21)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(20)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for RS(19)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(18)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(17)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(16)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(15)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for RS(14)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(13)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(12)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for EX(11)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for RS(10)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for UDTF(9)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(8)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(7)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(6)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for RS(5)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for GBY(4)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(3)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for SEL(2)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for FIL(1)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Pushdown Predicates of FIL For Alias : evt
14/12/21 01:10:42 INFO ppd.OpProcFactory: 	(month = 201412)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Processing for TS(0)
14/12/21 01:10:42 INFO ppd.OpProcFactory: Pushdown Predicates of TS For Alias : evt
14/12/21 01:10:42 INFO ppd.OpProcFactory: 	(month = 201412)
14/12/21 01:10:42 TRACE ppr.PartitionPruner: Started pruning partiton
14/12/21 01:10:42 TRACE ppr.PartitionPruner: dbname = default
14/12/21 01:10:42 TRACE ppr.PartitionPruner: tabname = event
14/12/21 01:10:42 TRACE ppr.PartitionPruner: prune Expression = GenericUDFOPEqual(Column[month],
Const int 201412)
14/12/21 01:10:42 DEBUG ppr.PartitionPruner: tabname = event is partitioned
14/12/21 01:10:42 DEBUG ppr.PartitionPruner: Filter w/ compacting: (month = 201412); filter
w/o compacting: (month = 201412)
14/12/21 01:10:42 INFO log.PerfLogger: <PERFLOG method=partition-retrieving from=org.apache.hadoop.hive.ql.optimizer.ppr.PartitionPruner>
14/12/21 01:10:42 INFO log.PerfLogger: </PERFLOG method=partition-retrieving start=1419124242223
end=1419124242320 duration=97 from=org.apache.hadoop.hive.ql.optimizer.ppr.PartitionPruner>
14/12/21 01:10:42 DEBUG hive.log: DDL: struct event { i64 utc_timestamp, string type, string
s, string n, i32 v, i32 l, string st1, string st2, string st3, string json_data, string ts}
14/12/21 01:10:42 INFO optimizer.ColumnPrunerProcFactory: RS 19 oldColExprMap: {KEY._col0=Column[_col0],
VALUE._col0=Column[_col1]}
14/12/21 01:10:42 INFO optimizer.ColumnPrunerProcFactory: RS 19 newColExprMap: {KEY._col0=Column[_col0],
VALUE._col0=Column[_col1]}
14/12/21 01:10:42 INFO optimizer.ColumnPrunerProcFactory: RS 14 oldColExprMap: {KEY._col0=Column[_col0],
VALUE._col0=Column[_col1]}
14/12/21 01:10:42 INFO optimizer.ColumnPrunerProcFactory: RS 14 newColExprMap: {KEY._col0=Column[_col0],
VALUE._col0=Column[_col1]}
14/12/21 01:10:42 INFO optimizer.ColumnPrunerProcFactory: RS 10 oldColExprMap: {_col2=Column[sessionlength],
_col1=Column[sessionid], _col0=Column[s]}
FAILED: NullPointerException null
14/12/21 01:10:42 ERROR ql.Driver: FAILED: NullPointerException null
java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.optimizer.ColumnPrunerProcFactory.pruneReduceSinkOperator(ColumnPrunerProcFactory.java:715)
	at org.apache.hadoop.hive.ql.optimizer.ColumnPrunerProcFactory.access$200(ColumnPrunerProcFactory.java:78)
	at org.apache.hadoop.hive.ql.optimizer.ColumnPrunerProcFactory$ColumnPrunerReduceSinkProc.process(ColumnPrunerProcFactory.java:427)
	at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
	at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:94)
	at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:78)
	at org.apache.hadoop.hive.ql.optimizer.ColumnPruner$ColumnPrunerWalker.walk(ColumnPruner.java:166)
	at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:109)
	at org.apache.hadoop.hive.ql.optimizer.ColumnPruner.transform(ColumnPruner.java:129)
	at org.apache.hadoop.hive.ql.optimizer.Optimizer.optimize(Optimizer.java:146)
	at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:9268)
	at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:327)
	at org.apache.hadoop.hive.ql.parse.ExplainSemanticAnalyzer.analyzeInternal(ExplainSemanticAnalyzer.java:64)
	at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:327)
	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:422)
	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:322)
	at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:975)
	at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1040)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:911)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:901)
	at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:268)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:220)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:423)
	at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:792)
	at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:686)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:625)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
{code}



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