Github user eolivelli commented on the issue:
https://github.com/apache/bookkeeper/pull/214
some errors from my logs:
org.apache.bookkeeper.test.TestBackwardCompat-output.txt:
```
io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
at
io.netty.buffer.AbstractReferenceCountedByteBuf.release0(AbstractReferenceCountedByteBuf.java:101)
at
io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:89)
at
io.netty.buffer.AbstractPooledDerivedByteBuf$PooledNonRetainedDuplicateByteBuf.release0(AbstractPooledDerivedByteBuf.java:192)
at
io.netty.buffer.AbstractDerivedByteBuf.release(AbstractDerivedByteBuf.java:85)
at org.apache.bookkeeper.bookie.Journal.run(Journal.java:965)
```
org.apache.bookkeeper.client.BookieRecoveryTest-output.txt:
```
2017-06-27 11:10:04,114 - ERROR -
[BookieJournal-15052:BookieCriticalThread@41] - Uncaught exception in thread
BookieJournal-15052 and is exiting!
io.netty.util.IllegalReferenceCountException: refCnt: 0, decrement: 1
at
io.netty.buffer.AbstractReferenceCountedByteBuf.release0(AbstractReferenceCountedByteBuf.java:101)
at
io.netty.buffer.AbstractReferenceCountedByteBuf.release(AbstractReferenceCountedByteBuf.java:89)
at
io.netty.buffer.AbstractPooledDerivedByteBuf$PooledNonRetainedDuplicateByteBuf.release0(AbstractPooledDerivedByteBuf.java:192)
at
io.netty.buffer.AbstractDerivedByteBuf.release(AbstractDerivedByteBuf.java:85)
at org.apache.bookkeeper.bookie.Journal.run(Journal.java:965)
```
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