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Failed to run distcp against ftp server installed on Windows. - Hadoop - [mail # user]
...Hi Experts,I could run distcp against ftp server installed on Linux, but could NOT rundistcp against ftp server installed on Windows. Below are the steps.Is this a DistCp bug? Any comments?[...
   Author: sam liu, 2015-02-02, 07:42
[expand - 2 more] - Re: Questions on rollback/upgrade HDFS with QJM HA enabled - Hadoop - [mail # user]
...For HDFS rollback with QJM HA enabled, I tried following steps, but failed:0. Stop the whole Hadoop cluster1. Update env parameters to use old Hadoop binaries2. Start JNs:sudo -u hdfs $HADOO...
   Author: sam liu, 2015-01-26, 06:29
Does MRv2 support the deprecated properties? - Hadoop - [mail # user]
...Hi Experts,In Hadoop 2.x code, there are lots of deprecated properties and many ofthem have new version in 2.x code.For example,org.apache.hadoop.mapred.JobConf#MAPRED_JOB_MAP_MEMORY_MB_PROP...
   Author: sam liu, 2014-12-23, 02:34
[expand - 2 more] - Re: Both hadoop fsck and dfsadmin can not detect missing replica in time? - Hadoop - [mail # user]
...I manually removed the block replica file on datanode and the removed filepath is '${dfs.datanode.data.dir}/current/BP-1640683473-9.181.64.230-1415757100604/current/finalized/subdir52/blk_10...
   Author: sam liu, 2014-11-14, 05:56
[expand - 3 more] - Re: Can add a regular check in DataNode on free disk space? - Hadoop - [mail # user]
...Hi Aitor,Actually I did so in my test. But the issue is that I did not find diskfull info in any log.2014-10-20 4:00 GMT-07:00 Aitor Cedres : ...
   Author: sam liu, 2014-10-20, 11:15
[expand - 2 more] - Re: Failed to rollback from hadoop-2.4.1 to hadoop 2.2.0 - Hadoop - [mail # user]
...I rollback from 2.4.1 to 2.2.0 and seems 2.2.0 does not has optionupgradeProgress, right?I guess it might be a hadoop issue, as I still could not start datanodeafter rollback2014-09-18 4:15 ...
   Author: sam liu, 2014-09-21, 04:09
Start standby namenode using bootstrapStandby hangs - Hadoop - [mail # user]
...Hi Experts,My hadoop cluster is enabled HA with QJM and I failed to upgrade it fromversion 2.2.0 to 2.4.1. Why? Is this a existing issue?My steps:1. Stop hadoop cluster2. On each node, upgra...
   Author: sam liu, 2014-09-10, 09:02
HDFS rollingUpgrade failed due to unexpected storage info - Hadoop - [mail # user]
...Hi Experts,According to section 'Upgrading Non-Federated Clusters' ofhttp://hadoop.apache.org/docs/r2.4.0/hadoop-project-dist/hadoop-hdfs/HdfsRollingUpgrade.html,I tried to upgrade hadoop 2....
   Author: sam liu, 2014-09-01, 07:11
[HADOOP-10759] Remove hardcoded JAVA_HEAP_MAX in hadoop-config.sh - Hadoop - [issue]
...In hadoop-common-project/hadoop-common/src/main/bin/hadoop-config.sh, there is a hard code for Java parameter: 'JAVA_HEAP_MAX=-Xmx1000m'. It should be removed....
http://issues.apache.org/jira/browse/HADOOP-10759    Author: sam liu, 2014-08-22, 08:18
[expand - 1 more] - Re: How to use docker in Hadoop, with patch of YARN-1964? - Hadoop - [mail # user]
...After applying this patch, I added following config in yarn-site.xml:      yarn.nodemanager.container-executor.classorg.apache.hadoop.yarn.server.nodemanager.DockerC...
   Author: sam liu, 2014-08-13, 03:14
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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