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https://issues.apache.org/jira/browse/HIVE-12712?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065140#comment-15065140
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Sergey Shelukhin commented on HIVE-12712:
-----------------------------------------
+1 pending a test run
> HiveInputFormat may fail to column names to read in some cases
> --------------------------------------------------------------
>
> Key: HIVE-12712
> URL: https://issues.apache.org/jira/browse/HIVE-12712
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.0.0, 2.1.0
> Reporter: Takahiko Saito
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-12712.1.patch, HIVE-12712.2.patch
>
>
> The primary issue is when plan is generated pathToAliases map is populated
> with directory paths to table aliases. pathToAliases.put() uses
> path.toString() as map key. During probing, path.toUri().toString() is used.
> This can cause probe misses when path contains spaces in them. path.toUri()
> will escape the spaces in the path whereas path.toString() does not escape
> the spaces. As a result, HiveInputFormat can trigger a different code path
> which can fail to set list of columns to read from the source table. This was
> causing unexpected NPE in OrcInputFormat (after refactoring HIVE-11705) which
> removed null check for column names. The resulting exception is
> {code}
> Caused by: java.lang.RuntimeException: ORC split generation failed with
> exception: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.generateSplitsInfo(OrcInputFormat.java:1288)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.getSplits(OrcInputFormat.java:1354)
> at
> org.apache.hadoop.hive.ql.io.HiveInputFormat.addSplitsForGroup(HiveInputFormat.java:367)
> at
> org.apache.hadoop.hive.ql.io.HiveInputFormat.getSplits(HiveInputFormat.java:457)
> at
> org.apache.hadoop.hive.ql.exec.tez.HiveSplitGenerator.initialize(HiveSplitGenerator.java:152)
> at
> org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:246)
> at
> org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable$1.run(RootInputInitializerManager.java:240)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> at
> org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:240)
> at
> org.apache.tez.dag.app.dag.RootInputInitializerManager$InputInitializerCallable.call(RootInputInitializerManager.java:227)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> ... 3 more
> Caused by: java.util.concurrent.ExecutionException:
> java.lang.NullPointerException
> at java.util.concurrent.FutureTask.report(FutureTask.java:122)
> at java.util.concurrent.FutureTask.get(FutureTask.java:192)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.generateSplitsInfo(OrcInputFormat.java:1282)
> ... 15 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.extractNeededColNames(OrcInputFormat.java:422)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.extractNeededColNames(OrcInputFormat.java:417)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat.access$2000(OrcInputFormat.java:134)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$SplitGenerator.call(OrcInputFormat.java:1072)
> at
> org.apache.hadoop.hive.ql.io.orc.OrcInputFormat$SplitGenerator.call(OrcInputFormat.java:919)
> ... 4 more
> {code}
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