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https://issues.apache.org/jira/browse/BEAM-422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15360092#comment-15360092
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ASF GitHub Bot commented on BEAM-422:
-------------------------------------
GitHub user dhalperi opened 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 7bbec5108aa64e97a4e7a2cda54882a369f94ebd
Author: Dan Halperin <dhalp...@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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