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[expand - 3 more] - Re: data partitioning and data model - HBase - [mail # user]
...I meant, in the normal course of operation, rebalancing will notaffect writes in flight. This is never an issue when pre splittingbecause, by definition, splits occurred before data was writ...
   Author: Alok Singh, 2015-02-23, 18:28
Re: Streaming data to htable - HBase - [mail # user]
...Have you considered placing something like Kafka queue in between thedata stream and hbase consumer/writer? I have used Kafka in the pastto consume very high volume of event data and write i...
   Author: Alok Singh, 2015-02-13, 19:40
Re: Fwd: data base design question - HBase - [mail # user]
...How are you going to access the results? Do you first lookup the orderand then the results? If so, you could do something like this:Table 1: Orderrow_key => order_idColumn Family => or...
   Author: Alok Singh, 2015-02-12, 21:52
[expand - 2 more] - Re: ColumnSuffixFilter in HBase - HBase - [mail # user]
...A simple String suffix check will be definitely faster, but I doubtyou will notice the difference as most of the time will be spentloading every column of every row to do the check.Just for ...
   Author: Alok Singh, 2015-02-11, 18:45
Re: Design a datastore maintaining historical view of users. - HBase - [mail # user]
...Have you looked at the phoenix project? http://phoenix.apache.org/It is an SQL layer on top of hbase, an alternative to map-reduce jobswhen ad hoc/realtime queries are needed.Your use case s...
   Author: Alok Singh, 2015-01-13, 20:15
Re: Question on the number of column families - HBase - [mail # user]
...One way to model the data would be to use a composite key that is madeup of the RDMS primary_key + "." + field_name. Then just have a singlecolumn that contains the value of the field.Indivi...
   Author: Alok Singh, 2014-08-05, 22:18
[MAPREDUCE-1776] Hadoop should provide a simplified way of fetching user-logs - MapReduce - [issue]
...Hi,   Currently , in both streaming and normal mode hadoop mapred program, user can't download the logs programatically.jobclient.output.filter=ALL, allows user to print output in ...
http://issues.apache.org/jira/browse/MAPREDUCE-1776    Author: Alok Singh, 2014-07-30, 17:41
Re: Distributed log splitting failing after cluster outage. - HBase - [mail # user]
...We ran into this a few weeks ago when while adding new nodes into anexisting cluster. Due to a misconfiguration, the new nodes were assigned awrong zookeeper quorum, and ended up forming a n...
   Author: Alok Singh, 2014-03-06, 19:33
Re: X3 slow down after moving from HBase 0.90.3 to HBase 0.92.1 - HBase - [mail # user]
...Do your PUTs and GETs have small amounts of data? If yes, then you can increase the number of handlers. We have a 8-node cluster on 0.92.1, and these are some of the setting we changed from ...
   Author: Alok Singh, 2012-11-21, 04:53
Re: 0.92 and Read/writes not scaling - HBase - [mail # user]
...Sorry for jumping on this thread late, but, I have seen very similar behavior in our cluster with hadoop 0.23.2 (CDH4B2 snapshot) and hbase 0.23.1. We have a small, 7 node cluster (48GB/16Co...
   Author: Alok Singh, 2012-04-02, 17:15
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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