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Posted to dev@parquet.apache.org by "Gabor Szadovszky (JIRA)" <ji...@apache.org> on 2018/09/20 09:37:00 UTC

[jira] [Resolved] (PARQUET-1417) BINARY_AS_SIGNED_INTEGER_COMPARATOR fails with IOBE for the same arrays with the different length

     [ https://issues.apache.org/jira/browse/PARQUET-1417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gabor Szadovszky resolved PARQUET-1417.
---------------------------------------
    Resolution: Fixed

> BINARY_AS_SIGNED_INTEGER_COMPARATOR fails with IOBE for the same arrays with the different length
> -------------------------------------------------------------------------------------------------
>
>                 Key: PARQUET-1417
>                 URL: https://issues.apache.org/jira/browse/PARQUET-1417
>             Project: Parquet
>          Issue Type: Bug
>    Affects Versions: 1.10.0
>            Reporter: Volodymyr Vysotskyi
>            Assignee: Volodymyr Vysotskyi
>            Priority: Major
>              Labels: pull-request-available
>
> {{BINARY_AS_SIGNED_INTEGER_COMPARATOR}} fails when the same byte arrays but with the different number leading zeros are compared:
> {code:java}
>     BINARY_AS_SIGNED_INTEGER_COMPARATOR.compare(
>         Binary.fromConstantByteBuffer(ByteBuffer.wrap(new byte[] { 0, 0, -108 })),
>         Binary.fromConstantByteBuffer(ByteBuffer.wrap(new byte[] { 0, -108 })));
> {code}
> Error is:
> {noformat}
> java.lang.IndexOutOfBoundsException
> 	at java.nio.Buffer.checkIndex(Buffer.java:540)
> 	at java.nio.HeapByteBuffer.get(HeapByteBuffer.java:139)
> 	at org.apache.parquet.schema.PrimitiveComparator$9.compare(PrimitiveComparator.java:280)
> 	at org.apache.parquet.schema.PrimitiveComparator$9.compare(PrimitiveComparator.java:262)
> 	at org.apache.parquet.schema.PrimitiveComparator$BinaryComparator.compareNotNulls(PrimitiveComparator.java:186)
> 	at org.apache.parquet.schema.PrimitiveComparator$BinaryComparator.compareNotNulls(PrimitiveComparator.java:183)
> 	at org.apache.parquet.schema.PrimitiveComparator.compare(PrimitiveComparator.java:63)
> {noformat}
> The problem is that {{BINARY_AS_SIGNED_INTEGER_COMPARATOR.compare(ByteBuffer b1, ByteBuffer b2)}} method passes the length of the first {{ByteBuffer}}, but it should pass the less length since padding was calculated and passed for the {{ByteBuffer}} with greater length to the {{compare(int length, ByteBuffer b1, int p1, ByteBuffer b2, int p2)}} method.



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