Jonny created AVRO-2179:
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             Summary: When the source is incorrect, the BinaryDecoder allocates 
large arrays
                 Key: AVRO-2179
                 URL: https://issues.apache.org/jira/browse/AVRO-2179
             Project: Avro
          Issue Type: Bug
          Components: java
    Affects Versions: 1.8.2
            Reporter: Jonny
         Attachments: image2018-5-10_11-7-40.png, image2018-5-11_21-27-56.png

Recentlly I use avro find it has this problem:The memory suddenly explode and 
trigger the fullgc, So I dump the memory file. And then I use jvisualvm tool to 
analysis I found a org.apache.avro.util.Utf8 object and the bytes array length 
was over 1610470037.

The method of readInt() shouldn't over limit, So I think it should be 
restricted.I look forward you reply my letter.



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