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https://issues.apache.org/jira/browse/HIVE-19286?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16744922#comment-16744922
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Oleksiy Sayankin edited comment on HIVE-19286 at 1/17/19 11:29 AM:
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Found this comment on related issue HIVE-16235 (see
[link|https://issues.apache.org/jira/browse/HIVE-16235?focusedCommentId=15954330&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-15954330]).
{quote}
Won't fix because:
1. MR is already deprecated and will go away in next Hive release
2. workaround is available
a) turn off MR and use Tez, or
b) turn off MapJoin
{quote}
So closing because of the same reasons.
was (Author: osayankin):
Found this comment on related issue (see
[link|https://issues.apache.org/jira/browse/HIVE-16235?focusedCommentId=15954330&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-15954330]).
{quote}
Won't fix because:
1. MR is already deprecated and will go away in next Hive release
2. workaround is available
a) turn off MR and use Tez, or
b) turn off MapJoin
{quote}
So closing because of the same reasons.
> NPE in MERGE operator on MR mode
> --------------------------------
>
> Key: HIVE-19286
> URL: https://issues.apache.org/jira/browse/HIVE-19286
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer, Transactions
> Affects Versions: 2.3.3
> Reporter: Oleksiy Sayankin
> Assignee: Oleksiy Sayankin
> Priority: Blocker
>
> *General Info*
> Hive version : 2.3.3
> {code}
> commit 3f7dde31aed44b5440563d3f9d8a8887beccf0be
> Author: Daniel Dai <da...@hortonworks.com>
> Date: Wed Mar 28 16:46:29 2018 -0700
> Preparing for 2.3.3 release
> {code}
> Hadoop version: 2.7.2.
> Engine
> {code}
> hive> set hive.execution.engine;
> hive.execution.engine=mr
> {code}
> *STEP 1. Create test data*
> {code}
> DROP TABLE IF EXISTS customer_target;
> DROP TABLE IF EXISTS customer_source;
> {code}
> {code}
> CREATE TABLE customer_target (id STRING, first_name STRING, last_name STRING,
> age INT) clustered by (id) into 2 buckets stored as ORC TBLPROPERTIES
> ('transactional'='true');
> {code}
> {code}
> insert into customer_target values ('001', 'John', 'Smith', 45), ('002',
> 'Michael', 'Watson', 27), ('003', 'Den', 'Brown', 33);
> SELECT id, first_name, last_name, age FROM customer_target;
> {code}
> {code}
> +------+-------------+------------+------+
> | id | first_name | last_name | age |
> +------+-------------+------------+------+
> | 002 | Michael | Watson | 27 |
> | 001 | John | Smith | 45 |
> | 003 | Den | Brown | 33 |
> +------+-------------+------------+------+
> {code}
> {code}
> CREATE TABLE customer_source (id STRING, first_name STRING, last_name STRING,
> age INT);
> insert into customer_source values ('001', 'Dorothi', 'Hogward', 77), ('007',
> 'Alex', 'Bowee', 1), ('088', 'Robert', 'Dowson', 25);
> SELECT id, first_name, last_name, age FROM customer_source;
> {code}
> {code}
> +------+-------------+------------+------+
> | id | first_name | last_name | age |
> +------+-------------+------------+------+
> | 088 | Robert | Dowson | 25 |
> | 001 | Dorothi | Hogward | 77 |
> | 007 | Alex | Bowee | 1 |
> +------+-------------+------------+------+
> {code}
> *STEP 2. Merge data*
> {code}
> merge into customer_target trg using customer_source src on src.id = trg.id
> when matched then update set first_name = src.first_name, last_name =
> src.last_name when not matched then insert values (src.id, src.first_name,
> src.last_name, src.age);
> {code}
> *ACTUAL RESULT*
> {code}
> 2018-04-24T07:11:44,448 DEBUG [main] log.PerfLogger: <PERFLOG
> method=deserializePlan
> from=org.apache.hadoop.hive.ql.exec.SerializationUtilities>
> 2018-04-24T07:11:44,448 INFO [main] exec.SerializationUtilities:
> Deserializing MapredLocalWork using kryo
> 2018-04-24T07:11:44,463 DEBUG [main] exec.Utilities: Hive Conf not found or
> Session not initiated, use thread based class loader instead
> 2018-04-24T07:11:44,538 DEBUG [main] log.PerfLogger: </PERFLOG
> method=deserializePlan start=1524568304448 end=1524568304538 duration=90
> from=org.apache.hadoop.hive.ql.exec.SerializationUtilities>
> 2018-04-24T07:11:44,545 INFO [main] mr.MapredLocalTask: 2018-04-24 07:11:44
> Starting to launch local task to process map join; maximum memory =
> 477626368
> 2018-04-24T07:11:44,545 DEBUG [main] mr.MapredLocalTask: initializeOperators:
> trg, children = [HASHTABLESINK[37]]
> 2018-04-24T07:11:44,656 DEBUG [main] exec.Utilities: Hive Conf not found or
> Session not initiated, use thread based class loader instead
> 2018-04-24T07:11:44,676 INFO [main] mr.MapredLocalTask: fetchoperator for
> trg created
> 2018-04-24T07:11:44,676 INFO [main] exec.TableScanOperator: Initializing
> operator TS[0]
> 2018-04-24T07:11:44,676 DEBUG [main] exec.TableScanOperator: Initialization
> Done 0 TS
> 2018-04-24T07:11:44,676 DEBUG [main] exec.TableScanOperator: Operator 0 TS
> initialized
> 2018-04-24T07:11:44,676 DEBUG [main] exec.TableScanOperator: Initializing
> children of 0 TS
> 2018-04-24T07:11:44,676 DEBUG [main] exec.HashTableSinkOperator: Initializing
> child 37 HASHTABLESINK
> 2018-04-24T07:11:44,676 INFO [main] exec.HashTableSinkOperator: Initializing
> operator HASHTABLESINK[37]
> 2018-04-24T07:11:44,677 INFO [main] mapjoin.MapJoinMemoryExhaustionHandler:
> JVM Max Heap Size: 477626368
> 2018-04-24T07:11:44,680 ERROR [main] mr.MapredLocalTask: Hive Runtime Error:
> Map local work failed
> java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeColumnEvaluator.initialize(ExprNodeColumnEvaluator.java:57)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.JoinUtil.getObjectInspectorsFromEvaluators(JoinUtil.java:91)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.HashTableSinkOperator.initializeOp(HashTableSinkOperator.java:153)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:366)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:556)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:508)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:376)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.initializeOperators(MapredLocalTask.java:508)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.startForward(MapredLocalTask.java:411)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.executeInProcess(MapredLocalTask.java:391)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecDriver.main(ExecDriver.java:764)
> ~[hive-exec-2.3.3.jar:2.3.3]
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> ~[?:1.8.0_161]
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> ~[?:1.8.0_161]
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> ~[?:1.8.0_161]
> at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161]
> at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
> ~[hadoop-common-2.7.2.jar:?]
> at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> ~[hadoop-common-2.7.2.jar:?]
> {code}
> FYI: [~ekoifman], [~eugene.koifman]
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