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[expand - 4 more] - Re: conf.get("dfs.data.dir") return null when hdfs-site.xml doesn't set it explicitly - Hadoop - [mail # user]
...Yong,good point about each node of the cluster could have different values inthe .xml files, and probably true if the nodes have different role orhardware settings. so some of the configurat...
   Author: Demai Ni, 2014-09-09, 18:34
Re: Nested data structures examples for HBase - HBase - [mail # user]
...there was a schema design talk in HBase conf 2012 (http://www.slideshare.net/cloudera/5-h-base-schemahbasecon2012). There wasa video but the link from here: http://hbasecon.com/archive.html,...
   Author: Demai Ni, 2014-09-08, 23:00
[HBASE-9531] a command line (hbase shell) interface to retreive the replication metrics and show replication lag - HBase - [issue]
...This jira is to provide a command line (hbase shell) interface to retreive the replication metrics info such as:ageOfLastShippedOp, timeStampsOfLastShippedOp, sizeOfLogQueue ageOfLastApplied...
http://issues.apache.org/jira/browse/HBASE-9531    Author: Demai Ni, 2014-09-05, 05:06
[expand - 1 more] - Re: question about matching java API with libHDFS - Hadoop - [mail # user]
...hi, Yi A,Thanks for your response. I took a look at hdfs.h and hdfs.c, it seems thelib only exposes some of APIs, as there are a lot of other public methodscan be accessed through java API/c...
   Author: Demai Ni, 2014-09-04, 15:47
[expand - 4 more] - Re: Local file system to access hdfs blocks - Hadoop - [mail # user]
...Stanley, Thanks. Btw, I found this jira hdfs-2246, which probably match what I am looking for.  Demai on the runOn Aug 28, 2014, at 11:34 PM, Stanley Shi  wrote: ...
   Author: Demai Ni, 2014-08-30, 01:26
[HBASE-11617] incorrect AgeOfLastAppliedOp and AgeOfLastShippedOp in replication Metrics when no new replication OP - HBase - [issue]
...AgeOfLastAppliedOp in MetricsSink.java is to indicate the time an edit sat in the 'replication queue' before it got replicated(aka applied)  /**   * Set the age of the la...
http://issues.apache.org/jira/browse/HBASE-11617    Author: Demai Ni, 2014-08-24, 06:53
[expand - 2 more] - Re: Scan output to file on each regserver node? - HBase - [mail # user]
...Nick, Thanks for your kind suggestions. I am not sure exactly the use case yet, just doing some experiment. Current idea is to have a join with data from a mpp database, and have a program f...
   Author: Demai Ni, 2014-08-21, 16:13
[expand - 2 more] - Re: meaning for AgeOfLastAppliedOp in Replication MetricsSink - HBase - [mail # dev]
...Lars,But I see you're looking at 0.98. There indeed we are calledyeah. that is what I am thinking. Let's have a quick fix on it. I willprovide a patch later today. (was working on HBASE-9531...
   Author: Demai Ni, 2014-07-30, 17:55
[HBASE-11566] make ExportSnapshot extendable by removing 'final' - HBase - [issue]
...currently the ExportSnapshot is defined as final class. This jira would like to remove 'final' to make the class extendable so that we can leverage the existing snapshot logic for backup/res...
http://issues.apache.org/jira/browse/HBASE-11566    Author: Demai Ni, 2014-07-23, 01:46
[HBASE-11452] add getUserPermission feature in AccessControlClient as client API - HBase - [issue]
...Currently user can 'grant','revoke' and show 'user_permission' through hbase shell. And there are client api implemented in AccessControlClient.java for 'grant' and 'revoke'. This jira is to...
http://issues.apache.org/jira/browse/HBASE-11452    Author: Demai Ni, 2014-07-08, 17:04
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