Github user ivakegg commented on the issue:
https://github.com/apache/accumulo/pull/134
I was finally able to reproduce the situation on my development box and I
have managed to track a several issues related to using deepcopies across
threads. I will upload the changes later today. The issues were:
1) The CachableBlockFile.Reader.close method needs to synchronize on the
underlying FSDataInputStream when closing it.
2) BCFile.finish method needs be synchronized to avoid the same
decompressor being returned multiple times. This accounts for the majority of
the issues.
3) BoundedRangeFileInputStream needs to ensure the stream is not closed
once synchronized on the underlying FSDataInputStream.
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