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isr never update - Kafka - [mail # user]
...In the initial state all replicas are in isr list, but sometimes when Icheck the topic state, the replica can never become isr even if actually itis synchronized. I saw in  the log, the...
   Author: Shangan Chen, 2014-11-22, 02:01
[expand - 1 more] - Re: Adding replicas to existing topic cause data loss in some partitions - Kafka - [mail # user]
...sorry, I didn't pay attention to these log. I did it by running a script inthe night, and received feedback in the morning, I found the server logoverflow by printing OutOfRange exception, s...
   Author: Shangan Chen, 2014-11-11, 08:40
Re: OffsetOutOfRange Error - Kafka - [mail # user]
...Hi Jim,Maybe your consumer  lagged behind the current smallest offset. And why ithappened? you might take a look at this tickethttps://issues.apache.org/jira/browse/KAFKA-1640On Wed, No...
   Author: Shangan Chen, 2014-11-05, 03:51
invalid frame size - Flume - [mail # user]
...Sometimes, I find error log in flume, as follows:06 May 2014 13:00:14,533 ERROR [Thread-2](org.apache.thrift.server.TNonblockingServer$FrameBuffer.read:468)  - Readan invalid frame size...
   Author: Shangan Chen, 2014-05-06, 06:18
flume agent get OOME from downstream flume tier - Flume - [mail # user]
...Sometime, I got OOME from flume-agent down-streaming events toflume-collector, I try to debug what cause the exception. I can only getthe java stack in flume-agent,and when I try to find the...
   Author: Shangan Chen, 2014-04-29, 11:21
It's quite inefficient taking event from memory channel one by one - Flume - [mail # user]
...I record the overall time in different stages in HDFSEventSink#process() ,take events from channel always cost the most time dealing with a batch ofevents. And I found it take one event from...
   Author: Shangan Chen, 2014-04-24, 06:37
[expand - 1 more] - Re: HDFS Sink Error - Flume - [mail # user]
...Have you applied this patch https://issues.apache.org/jira/browse/FLUME-2172 ?On Tue, Jan 21, 2014 at 5:29 PM, Himanshu Patidar <[EMAIL PROTECTED]> wrote:> I am getting the sam...
   Author: Shangan Chen, 2014-01-25, 13:21
[expand - 1 more] - Re: flume use quite a lot of direct momery and blast - Flume - [mail # user]
...Thanks a lot for your reply. I deployed flume on ubuntu and what confused me is not about the virtual address space but NIO Direct Memory increasing boundlessly. It will finally cause the ma...
   Author: Shangan Chen, 2014-01-22, 09:37
[expand - 1 more] - Re: file channel read performance impacted by write rate - Flume - [mail # user]
...the attachment flume.conf is channel and sink config, dumps.txt is thread dumps. channel type "dual" is a channel type I developped to utilize the merits of memory channel and filechannel. w...
   Author: Shangan Chen, 2013-12-17, 15:32
will memory channel lose data when stop flume? - Flume - [mail # user]
...When I check the code in Application, I found the stop logic doesn't guarantee the memory channel is drained out. It seems to stop component randomly as components are stored in a map. So ev...
   Author: Shangan Chen, 2013-12-05, 03:47
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB