Re: interesting paper on log replication

2013-04-16 Thread Jun Rao
On the last point, in general, Kafka logs are identical among replicas. The only case that they may not be identical is when an unclean leader election happens, i.e., a leader has to be elected from a replica not in in-sync replica set). Unclean leader election should be rare since this requires mu

[jira] [Updated] (KAFKA-823) merge 0.8 (51421fcc0111031bb77f779a6f6c00520d526a34) to trunk

2013-04-16 Thread Jun Rao (JIRA)
[ https://issues.apache.org/jira/browse/KAFKA-823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Jun Rao updated KAFKA-823: -- Attachment: kafka-823_v4.patch Thanks for the review. The suggestions make sense. Attach patch v4 that addresse

[jira] [Created] (KAFKA-864) bin/kafka-gen-reassignment.sh

2013-04-16 Thread Scott Clasen (JIRA)
Scott Clasen created KAFKA-864: -- Summary: bin/kafka-gen-reassignment.sh Key: KAFKA-864 URL: https://issues.apache.org/jira/browse/KAFKA-864 Project: Kafka Issue Type: Improvement Affects Ver

Re: interesting paper on log replication

2013-04-16 Thread Neha Narkhede
More notable differences from Kafka as far as log replication protocol is concerned - - Raft considers log entries as committed as soon as it is acknowledged by a majority of the servers in a cluster. Compare this to Kafka where we have the notion of "in-sync followers" that are required to ack ev

[jira] [Commented] (KAFKA-843) Re-add the release-zip sbt target

2013-04-16 Thread Jun Rao (JIRA)
[ https://issues.apache.org/jira/browse/KAFKA-843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13633003#comment-13633003 ] Jun Rao commented on KAFKA-843: --- Thanks for the addendum. It looks fine. I found another mino

[jira] [Commented] (KAFKA-823) merge 0.8 (51421fcc0111031bb77f779a6f6c00520d526a34) to trunk

2013-04-16 Thread Jay Kreps (JIRA)
[ https://issues.apache.org/jira/browse/KAFKA-823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13632925#comment-13632925 ] Jay Kreps commented on KAFKA-823: - Comments: - I think moving Log.append to return a tuple

[jira] [Commented] (KAFKA-843) Re-add the release-zip sbt target

2013-04-16 Thread Cosmin Lehene (JIRA)
[ https://issues.apache.org/jira/browse/KAFKA-843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13632656#comment-13632656 ] Cosmin Lehene commented on KAFKA-843: - [~junrao] Is the last patch ok?