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Re: phoenix-hadoop2-compat - Phoenix - [mail # dev]
...One side note with that change: I ended up having to manually addorg.apache.hbase:hbase-hadoop-compat andorg.apache.hbase:hbase-hadoop2-compat to my project so I could continue touse HBaseTe...
   Author: Rob Roland, 2014-11-11, 00:42
[expand - 1 more] - Re: checkAndPut with comparators - HBase - [mail # dev]
...Ahh, okay. Sounds like the rest still applies, though, with wanting to expose this to the client APIs in an easier-to-use fashion?  I'd also want to backport this patch to the 0.94.x se...
   Author: Rob Roland, 2013-07-02, 23:47
Re: Task Tracker going down on hive cluster - Hive - [mail # user]
...I'm not an expert in this, but I do see a Broken pipe writing to a local file system on your task tracker. Is it possible that you're out of disk space, or your EBS volume is failing? S3 doe...
   Author: Rob Roland, 2013-06-12, 07:34
Re: Issue with creating HIVE metadata for a HBASE table with 2000 + columns - Hive - [mail # user]
...You should consult the PostgreSQL documentation:  http://www.postgresql.org/docs/9.1/static/sql-altertable.html  http://www.postgresql.org/docs/9.1/static/datatype-character.html &...
   Author: Rob Roland, 2013-06-10, 08:07
Properly escaping newlines for Hive / HBase - Hive - [mail # user]
...I have an HBase table I've defined as an external table in Hive, and I'm having trouble determining the proper escaping of newlines in the byte arrays.  The primary use-case of this tab...
   Author: Rob Roland, 2013-06-07, 00:24
Re: Join Using MapReduce and Hbase - HBase - [mail # user]
...The O'Reilly book, "MapReduce Design Patterns" also covers joins. It's pretty easy to follow and it gives some good examples. This doesn't cover the HBase use case, but if you understand how...
   Author: Rob Roland, 2013-01-24, 22:53
Merging a large number of regions - HBase - [mail # user]
...Hi all,  I recently attempted to merge a large number of regions (trying to reduce from 5,000 regions in a table), but the merge tool presents an interesting challenge when trying to me...
   Author: Rob Roland, 2012-08-22, 21:28
Re: Enabling compression - HBase - [mail # user]
...Yes.  You'll need to disable the table, then alter it.  disable 'my_table' alter 'my_table', {NAME => 'my_column_family', COMPRESSION => 'snappy'} enable 'my_table'  You...
   Author: Rob Roland, 2012-07-24, 20:31
Re: drop table - HBase - [mail # user]
...You don't have to run the major compaction - the shell is doing that for you.  You must disable the table first, like:  disable 'session_timeline' drop 'session_timeline'  See...
   Author: Rob Roland, 2012-07-23, 20:26
RE: Use of MD5 as row keys - is this safe? - HBase - [mail # user]
...I use a SHA1 hash of an identifier as a rowkey and store the unhashed version in a "metadata" column family. Makes for a good distribution of keys and an easy thing to pre-split tables on. F...
   Author: Rob Roland, 2012-07-20, 19:21
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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