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Posted to dev@avro.apache.org by "Joseph Adler (JIRA)" <ji...@apache.org> on 2013/02/01 21:40:12 UTC

[jira] [Created] (AVRO-1241) improve trevni performance on string deserialization

Joseph Adler created AVRO-1241:
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             Summary: improve trevni performance on string deserialization
                 Key: AVRO-1241
                 URL: https://issues.apache.org/jira/browse/AVRO-1241
             Project: Avro
          Issue Type: Improvement
          Components: java
    Affects Versions: 1.7.3
            Reporter: Joseph Adler


I have been trying to implement a storage function for Apache Pig that writes data in Trevni format. I found that the storage function was very slow when reading whole records.

I did some profiling (with Yourkit) and found that most of the CPU time was being spent in org.apache.trevni.InputBuffer$readString() (specifically in the String() method). I changed to java.nio.charset.CharsetDecoder.decode for deserialization and saw a big improvement. Changes are included in the patch.

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