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(Updated April 22, 2014, 4:37 p.m.) Review request for kafka. Bugs: KAFKA-1410 https://issues.apache.org/jira/browse/KAFKA-1410 Repository: kafka Description (updated) ------- 1. Move MetadataCache to its own class. 2. Avoid updating metadata cache if the controller epoch is old. 1. Remove ensureTopicExists(). 2. Move the update of controller epoc in topic metadata request to ReplicaManager. Diffs (updated) ----- core/src/main/scala/kafka/server/KafkaApis.scala 1a4ffcea37e32739b8360956b4a40c0101b97822 core/src/main/scala/kafka/server/MetadataCache.scala PRE-CREATION core/src/main/scala/kafka/server/ReplicaManager.scala 5588f59783d5cd8f074263c207045625282af12d core/src/test/scala/unit/kafka/server/SimpleFetchTest.scala 17b08e14f5e9bfec1233c80d74b50bc2ec38aa25 Diff: https://reviews.apache.org/r/20540/diff/ Testing ------- Thanks, Jun Rao