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FileChannel.map与directbyteBuffer分析 - Hadoop - [mail # user]
... 转发: 转发:回复:答复:Forest5的OOM的原因的初步分析 From 孙宇(洪熙) To 刘磊(慕飒) Recipients [EMAIL PROTECTED]  发件人: 莫简豪 [mailto:[EMAIL PROTECTED]] 发送时间: 2014年3月18日 11:40收件人: 淘宝-核心系统研发-专用计算组主题: 转发:回复:答复:Forest5的...
   Author: lei liu, 2014-04-15, 03:51
Re: heterogeneous storages in HDFS - Hadoop - [mail # user]
...When is hadoop released£¿2014-04-14 17:04 GMT+08:00 Stanley Shi : ...
   Author: lei liu, 2014-04-14, 09:48
download hadoop-2.4 - Hadoop - [mail # user]
...Hadoop-2.4 is release, where can I download the hadoop-2.4 code from?Thanks,LiuLei ...
   Author: lei liu, 2014-04-11, 02:23
HDFS Client write data is slow - Hadoop - [mail # user]
...I use Hbase-0.94 and hadoop-2.0.I install one HDFS cluster that have 15 datanodes. If network bandwidth oftwo datanodes is saturation(example 100m/s),  writing performance of the entire...
   Author: lei liu, 2014-02-25, 01:59
datanode is slow - Hadoop - [mail # user]
...I use Hbase0.94 and CDH4. There are 25729 tcp connections in onemachine,example:hadoop@apayhbs081 ~ $ netstat -a | wc -l25729The linux configration is :       soft  ...
   Author: lei liu, 2014-02-20, 16:44
umount bad disk - Hadoop - [mail # user]
...I use HBase0.96 and CDH4.3.1.I use Short-Circuit Local Read:  dfs.client.read.shortcircuit  true  dfs.domain.socket.path  /home/hadoop/cdh4-dn-socket/...
   Author: lei liu, 2014-02-13, 09:04
hadoop security - Hadoop - [mail # user]
...There is DelegationToken in hadoop2. What is the role of  DelegationToken and how to use the DelegationToken ?  Thanks,  LiuLei...
   Author: lei liu, 2013-11-11, 09:40
dynamic configuration - Hadoop - [mail # user]
...There is ReconfigurationServlet class in hadoop-2.0.5.  How I to use the function for NameNode and DataNode?  Thanks,  LiuLei...
   Author: lei liu, 2013-08-15, 04:01
Re: when Standby Namenode is doing checkpoint, the Active NameNode is slow. - Hadoop - [mail # user]
...I set the "dfs.image.transfer.bandwidthPerSec." to 50M, and the performance is below:  2013-08-14 12:32:33,079 INFO my.EditLogPerformance: totalCount:1342440 speed:1111 2013-08-14 12:32...
   Author: lei liu, 2013-08-14, 06:09
throughput metrics in hadoop-2.0.5 - Hadoop - [mail # user]
...I use hadoop-2.0.5 and config hadoop-metrics2.properties file with below content. *.sink.ganglia.class=org.apache.hadoop.metrics2.sink.ganglia.GangliaSink31 *.sink.ganglia.period=10 *.sink.g...
   Author: lei liu, 2013-08-06, 06:17
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