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https://issues.apache.org/jira/browse/HIVE-25919?focusedWorklogId=720290&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-720290
]
ASF GitHub Bot logged work on HIVE-25919:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Feb/22 17:27
Start Date: 03/Feb/22 17:27
Worklog Time Spent: 10m
Work Description: zabetak opened a new pull request #2996:
URL: https://github.com/apache/hive/pull/2996
### What changes were proposed in this pull request?
The predicate analyzer can only handle expressions of the form:
1. `col comp_op constant`
2. `constant comp_op col`
and these are always `ExprNodeGenericFuncDesc`.
The new if clause ensures that we are never going to handle anything that is
not supported.
### Why are the changes needed?
Avoids the `ClassCastException` during predicate pushdown.
### Does this PR introduce _any_ user-facing change?
No apart from solving the problem.
### How was this patch tested?
`mvn test -Dtest=TestHBaseCliDriver -Dqfile="hbase_ppd_boolean_cols.q"`
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Issue Time Tracking
-------------------
Worklog Id: (was: 720290)
Remaining Estimate: 0h
Time Spent: 10m
> ClassCastException when pushing boolean column predicate in
> HBaseStorageHandler
> -------------------------------------------------------------------------------
>
> Key: HIVE-25919
> URL: https://issues.apache.org/jira/browse/HIVE-25919
> Project: Hive
> Issue Type: Bug
> Reporter: Naresh P R
> Assignee: Stamatis Zampetakis
> Priority: Major
> Attachments: test.q
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The following queries fail with a {{ClassCastException}} when the optimizer
> tries to push the predicates in the underlying HBase table.
> {code:sql}
> CREATE TABLE hbase_table(row_key string, c1 boolean, c2 boolean)
> STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
> WITH SERDEPROPERTIES (
> "hbase.columns.mapping" = ":key,cf:c1,cf:c2"
> );
> -- Q1
> select * from hbase_table where c1 and c2;
> -- Q2
> select * from hbase_table where c1=true and c2=true;
> {code}
> {code:java}
> ClassCastException org.apache.hadoop.hive.ql.plan.ExprNodeColumnDesc cannot
> be cast to org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc
> java.lang.ClassCastException:
> org.apache.hadoop.hive.ql.plan.ExprNodeColumnDesc cannot be cast to
> org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc
> at
> org.apache.hadoop.hive.ql.index.IndexPredicateAnalyzer$1.process(IndexPredicateAnalyzer.java:163)
> 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.DefaultGraphWalker.walk(DefaultGraphWalker.java:178)
> at
> org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:120)
> at
> org.apache.hadoop.hive.ql.index.IndexPredicateAnalyzer.analyzePredicate(IndexPredicateAnalyzer.java:174)
> at
> org.apache.hadoop.hive.hbase.HBaseStorageHandler.decomposePredicate(HBaseStorageHandler.java:415)
>
> {code}
> mvn test -Dtest=TestHBaseCliDriver -Dqfile=test.q -Dtest.output.overwrite
> -DskipSparkTests -pl itests/qtest -Pitests
> The failure in Q2 is probably related to HIVE-13815 since the expression (c1
> = true and c2 = true) is simplified to (c1 and c2) leading to the exception
> above but the problem was probably there even before as Q1 is failing as well
> with the same stacktrace.
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