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https://issues.apache.org/jira/browse/HIVE-14082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15347105#comment-15347105
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Sahil Takiar commented on HIVE-14082:
-------------------------------------
[~sershe], [~amareshwari] I noticed you both had made some additions to the
{{ReduceSinkOperator}} class in HIVE-5657 and HIVE-474, respectively. Do you
have any insight into the bug reported here?
> Multi-Insert Query Fails with GROUP BY, DISTINCT, and WHERE clauses
> -------------------------------------------------------------------
>
> Key: HIVE-14082
> URL: https://issues.apache.org/jira/browse/HIVE-14082
> Project: Hive
> Issue Type: Bug
> Affects Versions: 1.1.0, 2.1.0
> Reporter: Sahil Takiar
> Assignee: Sahil Takiar
>
> The following MULTI-INSERT Query Fails in Hive. I've listed the query
> required to re-produce this failure, as well as a few similar queries that
> work properly.
> Setup Queries:
> {code}
> DROP SCHEMA IF EXISTS multi_table_insert_bug CASCADE;
> CREATE SCHEMA multi_table_insert_bug;
> USE multi_table_insert_bug;
> DROP TABLE IF EXISTS multi_table_insert_source;
> DROP TABLE IF EXISTS multi_table_insert_test;
> CREATE TABLE multi_table_insert_source (
> date_column DATE,
> column_1 STRING,
> column_2 STRING,
> column_3 STRING,
> column_4 STRING
> );
> CREATE TABLE multi_table_insert_test (
> column_1 STRING,
> column_2 STRING,
> line_count INT,
> distinct_count_by_1_column INT,
> distinct_count_by_2_columns INT
> )
> PARTITIONED BY (partition_column INT);
> INSERT OVERWRITE TABLE multi_table_insert_source VALUES
> ('2016-01-22', 'value_1_1', 'value_1_2', 'value_1_3', 'value_1_4'),
> ('2016-01-22', 'value_2_1', 'value_2_2', 'value_2_3', 'value_2_4'),
> ('2016-01-22', 'value_3_1', 'value_3_2', 'value_3_3', 'value_3_4'),
> ('2016-01-22', 'value_4_1', 'value_4_2', 'value_4_3', 'value_4_4'),
> ('2016-01-22', 'value_5_1', 'value_5_2', 'value_5_3', 'value_5_4');
> {code}
> The following queries run successfully:
> *Query 1:*
> {code}
> FROM multi_table_insert_source
> INSERT OVERWRITE TABLE multi_table_insert_test PARTITION (partition_column
> = 365)
> SELECT
> column_1,
> column_2,
> COUNT(*) AS line_count,
> COUNT(DISTINCT column_3) AS distinct_count_by_1_column,
> COUNT(DISTINCT date_column, column_3) AS distinct_count_by_2_columns
> WHERE date_column >= DATE_SUB(FROM_UNIXTIME(UNIX_TIMESTAMP()), 365)
> GROUP BY
> column_1,
> column_2;
> {code}
> *Query 2:*
> {code}
> FROM multi_table_insert_source
> INSERT OVERWRITE TABLE multi_table_insert_test PARTITION (partition_column
> = 365)
> SELECT
> column_1,
> column_2,
> COUNT(*) AS line_count,
> COUNT(DISTINCT column_3) AS distinct_count_by_1_column,
> COUNT(DISTINCT date_column, column_3) AS distinct_count_by_2_columns
> -- WHERE date_column >= DATE_SUB(FROM_UNIXTIME(UNIX_TIMESTAMP()), 365)
> GROUP BY
> column_1,
> column_2
> INSERT OVERWRITE TABLE multi_table_insert_test PARTITION (partition_column
> = 1096)
> SELECT
> column_1,
> column_2,
> COUNT(*) AS line_count,
> COUNT(DISTINCT column_3) AS distinct_count_by_1_column,
> COUNT(DISTINCT date_column, column_3) AS distinct_count_by_2_columns
> -- WHERE date_column >= DATE_SUB(FROM_UNIXTIME(UNIX_TIMESTAMP()), 1096)
> GROUP BY
> column_1,
> column_2;
> {code}
> The following query fails with a {{ClassCastException}}:
> *Query 3:*
> {code}
> FROM multi_table_insert_source
> INSERT OVERWRITE TABLE multi_table_insert_test PARTITION (partition_column
> = 365)
> SELECT
> column_1,
> column_2,
> COUNT(*) AS line_count,
> COUNT(DISTINCT column_3) AS distinct_count_by_1_column,
> COUNT(DISTINCT date_column, column_3) AS distinct_count_by_2_columns
> WHERE date_column >= DATE_SUB(FROM_UNIXTIME(UNIX_TIMESTAMP()), 365)
> GROUP BY
> column_1,
> column_2
> INSERT OVERWRITE TABLE multi_table_insert_test PARTITION (partition_column
> = 1096)
> SELECT
> column_1,
> column_2,
> COUNT(*) AS line_count,
> COUNT(DISTINCT column_3) AS distinct_count_by_1_column,
> COUNT(DISTINCT date_column, column_3) AS distinct_count_by_2_columns
> WHERE date_column >= DATE_SUB(FROM_UNIXTIME(UNIX_TIMESTAMP()), 1096)
> GROUP BY
> column_1,
> column_2;
> {code}
> Here is the full stack-trace of the exception:
> *Exception 1:*
> {code}
> java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException:
> Hive Runtime Error while processing row (tag=0)
> {"key":{"_col0":"value_1_1","_col1":"value_1_2","_col2":{0:{"_col0":"value_1_3"}}},"value":null}
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:257)
> at
> org.apache.hadoop.mapred.ReduceTask.runOldReducer(ReduceTask.java:506)
> at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:447)
> at
> org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:449)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row (tag=0)
> {"key":{"_col0":"value_1_1","_col1":"value_1_2","_col2":{0:{"_col0":"value_1_3"}}},"value":null}
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:245)
> ... 3 more
> Caused by: java.lang.ClassCastException: org.apache.hadoop.io.Text cannot be
> cast to org.apache.hadoop.hive.serde2.io.DateWritable
> at
> org.apache.hadoop.hive.serde2.objectinspector.primitive.WritableDateObjectInspector.getPrimitiveWritableObject(WritableDateObjectInspector.java:38)
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.compare(ObjectInspectorUtils.java:938)
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.compare(ObjectInspectorUtils.java:818)
> at
> org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.compare(ObjectInspectorUtils.java:809)
> at
> org.apache.hadoop.hive.ql.udf.generic.GenericUDFOPEqualOrGreaterThan.evaluate(GenericUDFOPEqualOrGreaterThan.java:141)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator._evaluate(ExprNodeGenericFuncEvaluator.java:186)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:77)
> at
> org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:65)
> at
> org.apache.hadoop.hive.ql.exec.FilterOperator.process(FilterOperator.java:112)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:878)
> at
> org.apache.hadoop.hive.ql.exec.ForwardOperator.process(ForwardOperator.java:38)
> at
> org.apache.hadoop.hive.ql.exec.mr.ExecReducer.reduce(ExecReducer.java:236)
> ... 3 more
> {code}
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