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deadNodes in DFSInputStream - HDFS - [mail # dev]
...I use Hbase-0.94 and CDH-4.3.1 When RegionServer read data from loca datanode, if local datanode is dead, the local datanode is add to deadNodes, and RegionServer read data from remote datan...
   Author: lei liu, 2013-12-31, 09:25
ByteBuffer-based read API for pread - HDFS - [mail # dev]
...There is ByteBuffer read API for sequential read in CDH4.3.1, example:public synchronized int read(final ByteBuffer buf) throws IOException  API. But there is not ByteBuffe read API for...
   Author: lei liu, 2013-12-31, 09:01
Re: Metrics2 code - HDFS - [mail # dev]
...Hi Andrew, thanks for your reply.  The metrics2 configuration is : *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31 *.sink.ganglia.period=10 *.sink.ganglia.sup...
   Author: lei liu, 2013-11-21, 09:57
Re: block access token - HDFS - [mail # dev]
...Hi  Luke,  Can I set "dfs.block.access.token.lifetime" to two minutes?     2013/11/18 lei liu  ...
   Author: lei liu, 2013-11-20, 04:11
hadoop security - HDFS - [mail # user]
...When I use the hadoop security, I must use jsvc to start datanode. Why must use jsvc to start datanode? What are the advantages do that?  Thanks,  LiuLei...
   Author: lei liu, 2013-11-18, 09:42
Re: Decommission DataNode - HDFS - [mail # dev]
...Should the datanode be shutdown when it is Decommissioned?  I think if this is bug,  I can fix it.   2013/10/29 lei liu  ...
   Author: lei liu, 2013-10-29, 08:48
Datanode fencing mechanism - HDFS - [mail # dev]
...In https://issues.apache.org/jira/browse/HDFS-1972 jira, there is one below case: Scenario 3: DN restarts during split brain period  (this scenario illustrates why I think we need to pe...
   Author: lei liu, 2013-10-28, 08:57
Re: IncompatibleClassChangeError - HDFS - [mail # user]
...Yes, My job is compiled in CHD3u3, and I run the job on CDH4.3.1,  but I use the mr1 of CHD4.3.1 to run the job.  What are the different mr1 of cdh4 and mr of cdh3?  Thanks, &...
   Author: lei liu, 2013-09-30, 03:29
Re: metric type - HDFS - [mail # user]
...Hello,  Can anybody answer the question?   2013/9/1 lei liu  ...
   Author: lei liu, 2013-09-06, 06:05
hadoop2 and Hbase0.94 - HDFS - [mail # user]
...I use hadoop2 and hbase0.94, but there is below exception:  2013-08-28 11:36:12,922 ERROR [MASTER_TABLE_OPERATIONS-dw74.kgb.sqa.cm4,13646,1377660964832-0] executor.EventHandler(172): Ca...
   Author: lei liu, 2013-08-28, 08:36
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