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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-21255) Remove QueryConditionBuilder in JdbcStorageHandler
Date Wed, 13 Feb 2019 01:36:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daniel Dai updated HIVE-21255:
------------------------------
    Status: Patch Available  (was: Open)

> Remove QueryConditionBuilder in JdbcStorageHandler
> --------------------------------------------------
>
>                 Key: HIVE-21255
>                 URL: https://issues.apache.org/jira/browse/HIVE-21255
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>            Priority: Major
>         Attachments: HIVE-21255.1.patch
>
>
> QueryConditionBuilder is not correctly implemented. Always see the following exception
even the query finish succeeded:
> {code}
> 2019-02-13 01:09:53,406 [ERROR] [TezChild] |jdbc.QueryConditionBuilder|: Error during
condition build
> java.lang.ArrayIndexOutOfBoundsException: 0
>         at java.beans.XMLDecoder.readObject(XMLDecoder.java:250)
>         at org.apache.hive.storage.jdbc.QueryConditionBuilder.createConditionString(QueryConditionBuilder.java:125)
>         at org.apache.hive.storage.jdbc.QueryConditionBuilder.buildCondition(QueryConditionBuilder.java:74)
>         at org.apache.hive.storage.jdbc.conf.JdbcStorageConfigManager.getQueryToExecute(JdbcStorageConfigManager.java:155)
>         at org.apache.hive.storage.jdbc.dao.GenericJdbcDatabaseAccessor.getRecordIterator(GenericJdbcDatabaseAccessor.java:158)
>         at org.apache.hive.storage.jdbc.JdbcRecordReader.next(JdbcRecordReader.java:58)
>         at org.apache.hive.storage.jdbc.JdbcRecordReader.next(JdbcRecordReader.java:35)
>         at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:360)
>         at org.apache.hadoop.hive.ql.io.HiveRecordReader.doNext(HiveRecordReader.java:79)
>         at org.apache.hadoop.hive.ql.io.HiveRecordReader.doNext(HiveRecordReader.java:33)
>         at org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.next(HiveContextAwareRecordReader.java:116)
>         at org.apache.hadoop.mapred.split.TezGroupedSplitsInputFormat$TezGroupedSplitsRecordReader.next(TezGroupedSplitsInputFormat.java:151)
>         at org.apache.tez.mapreduce.lib.MRReaderMapred.next(MRReaderMapred.java:116)
>         at org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.pushRecord(MapRecordSource.java:68)
>         at org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.run(MapRecordProcessor.java:426)
>         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:267)
>         at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:250)
>         at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:374)
>         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:73)
>         at org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:61)
>         at java.security.AccessController.doPrivileged(Native Method)
>         at javax.security.auth.Subject.doAs(Subject.java:422)
>         at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:61)
>         at org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
>         at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
>         at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:108)
>         at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:41)
>         at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:77)
>         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>         at java.lang.Thread.run(Thread.java:748)
> {code}
> We don't actually need QueryConditionBuilder when cbo is enabled since predicate push
down is handled by calcite (HIVE-20822). One can argue when cbo is disabled we might still
need that since calcite will not do the push down, but that's a minor code path and removing
QueryConditionBuilder won't cause any correctness issue. So I'd like to remove it for simplicity.



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