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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (BEAM-422) AvroSource hits various IOException when using Snappy codec
Date Wed, 06 Jul 2016 17:30:11 GMT

    [ https://issues.apache.org/jira/browse/BEAM-422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364698#comment-15364698
] 

ASF GitHub Bot commented on BEAM-422:
-------------------------------------

GitHub user dhalperi reopened a pull request:

    https://github.com/apache/incubator-beam/pull/583

    [BEAM-422] AvroSource: use a 64K buffer size for Snappy codec

    commons-compress defaults to a 32K buffer size for Snappy.
    
    However, Avro uses xerial.snappy to write, which has a 64K buffer size.
    When the buffer size is too small, decoding data from Snappy can cause
    an EOF exception rather than finishing data.
    
    This fixes BEAM-422.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/dhalperi/incubator-beam avro-source-fix

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/incubator-beam/pull/583.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #583
    
----
commit 243de5d4b1c8a5526355379d39dc55bc25d62a9a
Author: Dan Halperin <dhalperi@google.com>
Date:   2016-07-02T09:18:07Z

    AvroSource: use a 64K buffer size for Snappy codec
    
    commons-compress defaults to a 32K buffer size for Snappy.
    
    However, Avro uses xerial.snappy to write, which has a 64K buffer size.
    When the buffer size is too small, decoding data from Snappy can cause
    an EOF exception rather than finishing data.
    
    This fixes BEAM-422.

----


> AvroSource hits various IOException when using Snappy codec
> -----------------------------------------------------------
>
>                 Key: BEAM-422
>                 URL: https://issues.apache.org/jira/browse/BEAM-422
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>    Affects Versions: 0.1.0-incubating, 0.2.0-incubating
>            Reporter: Daniel Halperin
>            Assignee: Daniel Halperin
>
> Example:
> {code}
> Caused by:java.io.IOException: Offset is larger than block size at org.apache.commons.compress.compressors.snappy.SnappyCompressorInputStream.expandCopy(SnappyCompressorInputStream.java:338)
at org.apache.commons.compress.compressors.snappy.SnappyCompressorInputStream.fill(SnappyCompressorInputStream.java:209)
at org.apache.commons.compress.compressors.snappy.SnappyCompressorInputStream.read(SnappyCompressorInputStream.java:134)
atorg.apache.avro.io.BinaryDecoder$InputStreamByteSource.tryReadRaw(BinaryDecoder.java:839)
atorg.apache.avro.io.BinaryDecoder$ByteSource.compactAndFill(BinaryDecoder.java:692) atorg.apache.avro.io.BinaryDecoder.ensureBounds(BinaryDecoder.java:471)
atorg.apache.avro.io.BinaryDecoder.readInt(BinaryDecoder.java:128) atorg.apache.avro.io.BinaryDecoder.readIndex(BinaryDecoder.java:423)
atorg.apache.avro.io.ResolvingDecoder.doAction(ResolvingDecoder.java:290) atorg.apache.avro.io.parsing.Parser.advance(Parser.java:88)
atorg.apache.avro.io.ResolvingDecoder.readIndex(ResolvingDecoder.java:267) at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:155)
at org.apache.avro.generic.GenericDatumReader.readField(GenericDatumReader.java:193) at org.apache.avro.generic.GenericDatumReader.readRecord(GenericDatumReader.java:183)
at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:151) at org.apache.avro.generic.GenericDatumReader.read(GenericDatumReader.java:142)

> {code}



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