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Posted to commits@datasketches.apache.org by GitBox <gi...@apache.org> on 2019/08/22 21:30:14 UTC
[GitHub] [incubator-datasketches-java] a2l007 opened a new issue #269:
Backward compatibility for empty sketches generated from older versions
a2l007 opened a new issue #269: Backward compatibility for empty sketches generated from older versions
URL: https://github.com/apache/incubator-datasketches-java/issues/269
The latest version of sketches doesn't seem to be backward compatible for empty sketches generated using older versions. For example in an union operation, using an empty sketch such as `AQMDAAAazJM=` generated using the older versions would throw the error:
```
java.lang.AssertionError: reqOffset: 8, reqLength: 8, (reqOff + reqLen): 16, allocSize: 8
at com.yahoo.memory.UnsafeUtil.assertBounds(UnsafeUtil.java:167)
at com.yahoo.memory.BaseState.assertValidAndBoundsForRead(BaseState.java:330)
at com.yahoo.memory.BaseWritableMemoryImpl.getNativeOrderedLong(BaseWritableMemoryImpl.java:284)
at com.yahoo.memory.WritableMemoryImpl.getLong(WritableMemoryImpl.java:133)
at com.yahoo.sketches.theta.UnionImpl.update(UnionImpl.java:278)
```
@AlexanderSaydakov @leerho This is the same problem that I had discussed with you and I'm logging this issue for tracking purposes.
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