Review Request 15674: Reassign partitions should delete the old replicas from disk

[Jun Rao]

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https://reviews.apache.org/r/15674/
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Review request for kafka.


Bugs: KAFKA-1074
    https://issues.apache.org/jira/browse/KAFKA-1074


Repository: kafka


Description
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kafka-1074; fix 3


kafka-1074; fix 2


kafka-1074


Diffs
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  core/src/main/scala/kafka/cluster/Partition.scala 
02ccc17c79b6d44c75f9bb6ca7cda8c51ae6f6fb 
  core/src/main/scala/kafka/log/Log.scala 
1883a53de112ad08449dc73a2ca08208c11a2537 
  core/src/main/scala/kafka/log/LogManager.scala 
81be88aa618ed5614703d45a0556b77c97290085 
  core/src/main/scala/kafka/log/LogSegment.scala 
0d6926ea105a99c9ff2cfc9ea6440f2f2d37bde8 
  core/src/main/scala/kafka/server/ReplicaManager.scala 
161f58134f20f9335dbd2bee6ac3f71897cbef7c 
  core/src/test/scala/unit/kafka/admin/AdminTest.scala 
c30069e837e54fb91bf1d5b75b133282a28dedf8 

Diff: https://reviews.apache.org/r/15674/diff/


Testing
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Thanks,

Jun Rao