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https://issues.apache.org/jira/browse/AVRO-3802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17763039#comment-17763039
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ASF subversion and git services commented on AVRO-3802:
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Commit 8eab8f14b522d8a99df81217fc94a6d17f5c6595 in avro's branch
refs/heads/dependabot/maven/lang/java/io.netty-netty-bom-4.1.97.Final from
CamilAbraham
[ https://gitbox.apache.org/repos/asf?p=avro.git;h=8eab8f14b ]
AVRO-3802: [Csharp] Fix memory leak on deflate codec decompression (#2439)
* AVRO-3802: [Csharp] Fix memory leak on avro deflate codec decompression
* AVRO-3802: [Csharp] Address PR comments
* AVRO-3802: [Csharp] Revert IDisposable change in Encoder and Decoder
* AVRO-3802: [Csharp] Remove implicit filtering of target sequence
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Co-authored-by: Camil Abraham <[email protected]>
> Memory leak on decompressing deflate codec avro files
> -----------------------------------------------------
>
> Key: AVRO-3802
> URL: https://issues.apache.org/jira/browse/AVRO-3802
> Project: Apache Avro
> Issue Type: Bug
> Components: csharp
> Affects Versions: 1.11.1, 1.12.0, 1.11.2, 1.11.3
> Reporter: amy myo
> Priority: Major
> Labels: pull-request-available
> Attachments: call tree.PNG, deflate decompression memory profiler.png
>
> Time Spent: 5.5h
> Remaining Estimate: 0h
>
> Hi,
> We are using apache.avro C# library for compression and decompression of
> large avro files. Each file is 2-3MB and decompression of 20 files is using
> 2.1GB memory and memory keep increasing around 200-300MB for follow up calls.
> Attached is the memory profiler of three calls. Each call decompress the same
> 20 files. First call uses 2.1GB , increase to 2.37GB and then 2.68GB.
> Call tree is showing most of the memory are used by `DeflatCodec.CopyTo`
> method.
> # `CopyTo` method is not using Array pool. Default Microsoft's stream
> `copyTo` method is much more efficient.
> # `inStream` and `outStream` memory streams are not in using statement.
> # On `outstream` object creation, object can be initialized with defined
> length/stream capacity.
>
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