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Re: Easiest way to get a random sample of keys - HBase - [mail # user]
...HBase shell is a JRuby shell and wraps all Java classes in a ruby interface. You can actually use a RandomRowFilter with a 5% configuration to achieve what you need.Regards,Dhaval___________...
   Author: Dhaval Shah, 2014-01-24, 23:42
[expand - 2 more] - Re: HBase Design : Column name v/s Version - HBase - [mail # user]
...Theoretically that could work. However, it does seem like a weird way of doing what you want to do and you might run into unforeseen issues. One issue I see is that 100k versions sounds a bi...
   Author: Dhaval Shah, 2014-01-24, 19:09
Re: Rebuild HBASE Table to reduce Regions per RS - HBase - [mail # user]
...If you can afford downtime for your table, there are ways to do it. You can: - Merge regions (requires table to be disabled atleast in some older versions and probably in newer ones too) - G...
   Author: Dhaval Shah, 2014-01-14, 17:42
Re: Large Puts in MR job - HBase - [mail # user]
...If you are creating 1 big put object, how would auto flush help you? In theory you would run out of memory before you do a table.put() anyways. Am I missing something?  Why don't you sp...
   Author: Dhaval Shah, 2014-01-14, 01:42
Re: Schema Design Newbie Question - HBase - [mail # user]
...A 1000 CFs with HBase does not sound like a good idea.   category + timestamp sounds like the better of the 2 options you have thought of.   Can you tell us a little more about you...
   Author: Dhaval Shah, 2013-12-23, 23:35
[expand - 2 more] - Re: One Region Server fails - all M/R jobs crash. - HBase - [mail # user]
...Hmm ok. You are right. The principle of Hadoop/HBase is do do big data on commodity hardware but that's not to say you can do it without enough hardware. Get 8 commodity disks and see your p...
   Author: Dhaval Shah, 2013-11-25, 16:34
[expand - 1 more] - Re: RegionServer crash without any errors (compaction?) - HBase - [mail # user]
...Operation too slow is generally in the .log file while the GC logs (if you enabled GC logging) is in the .out file. You have a very small heap for a 1GB HFIle size. You are probably running ...
   Author: Dhaval Shah, 2013-11-07, 16:21
[expand - 1 more] - Re: Scanner Caching with wildly varying row widths - HBase - [mail # user]
...No problem  Sent from Yahoo Mail on Android  ...
   Author: Dhaval Shah, 2013-11-05, 00:20
Re: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.util.Bytes - HBase - [mail # user]
...You need to add the Hadoop and HBase libraries to the Hadoop Classpath. You successfully added it on the classpath of your mainproject but when it submits the job to Hadoop, the classpath is...
   Author: Dhaval Shah, 2013-11-04, 16:42
[expand - 5 more] - Re: RE: Add Columnsize Filter for Scan Operation - HBase - [mail # user]
...Mapper.cleanup is always called after all map calls are over  Sent from Yahoo Mail on Android  ...
   Author: Dhaval Shah, 2013-10-26, 13:51
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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