[jira] [Comment Edited] (HIVE-14621) LLAP: memory.mode = none has NPE

["Sergey Shelukhin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-14621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15435908#comment-15435908 ] 

Sergey Shelukhin edited comment on HIVE-14621 at 8/24/16 11:08 PM:
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The reason is that the code relies on cache for refcount increment; no cache means no refcount
[~prasanth_j] can you take a look?


was (Author: sershe):
The reason is that the code relies on cache for refcount increment; no cache means no refcount
[~prasanth_j] can you take a look?

> LLAP: memory.mode = none has NPE
> --------------------------------
>
>                 Key: HIVE-14621
>                 URL: https://issues.apache.org/jira/browse/HIVE-14621
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>         Attachments: HIVE-14621.patch
>
>
> When IO elevator is enabled, but cache and allocator are both disabled, NPEs happen. It's not really a recommended mode, but it's the only way to disable cache, so we probably need to fix it. I am also going to nuke the intermediate mode (allocator w/no cache) meanwhile cause it's pointless and just creates a zoo of configurations.
> {noformat}
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hive.llap.cache.LlapDataBuffer.getByteBufferDup(LlapDataBuffer.java:59)
> at org.apache.hadoop.hive.ql.io.orc.encoded.StreamUtils.createDiskRangeInfo(StreamUtils.java:63)
> at org.apache.hadoop.hive.ql.io.orc.encoded.StreamUtils.createSettableUncompressedStream(StreamUtils.java:48)
> at org.apache.hadoop.hive.ql.io.orc.encoded.EncodedTreeReaderFactory$LongStreamReader$StreamReaderBuilder.build(EncodedTreeReaderFactory.java:514)
> at org.apache.hadoop.hive.ql.io.orc.encoded.EncodedTreeReaderFactory.createEncodedTreeReader(EncodedTreeReaderFactory.java:1737)
> at org.apache.hadoop.hive.llap.io.decode.OrcEncodedDataConsumer.decodeBatch(OrcEncodedDataConsumer.java:162)
> at org.apache.hadoop.hive.llap.io.decode.OrcEncodedDataConsumer.decodeBatch(OrcEncodedDataConsumer.java:55)
> at org.apache.hadoop.hive.llap.io.decode.EncodedDataConsumer.consumeData(EncodedDataConsumer.java:76)
> at org.apache.hadoop.hive.llap.io.decode.EncodedDataConsumer.consumeData(EncodedDataConsumer.java:30)
> at org.apache.hadoop.hive.ql.io.orc.encoded.EncodedReaderImpl.readEncodedColumns(EncodedReaderImpl.java:408)
> at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader.performDataRead(OrcEncodedDataReader.java:424)
> at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader$4.run(OrcEncodedDataReader.java:227)
> at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader$4.run(OrcEncodedDataReader.java:224)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1724)
> at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader.callInternal(OrcEncodedDataReader.java:224)
> at org.apache.hadoop.hive.llap.io.encoded.OrcEncodedDataReader.callInternal(OrcEncodedDataReader.java:93)
> ... 6 more
> {noformat}



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