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Re: Hive UDAF convert problem - Hive - [mail # user]
...Hi Cheng, It's reflection that's causing you the problem. You seem to be using the old class (UDAF) to implement UDAF. While that may still be fine, just so that you know there is a newer, b...
   Author: Mark Grover, 2012-11-15, 07:01
[expand - 1 more] - Re: Hive Join with distinct rows - Hive - [mail # user]
...I see. I re-read your first email and you would like to query "select all the unique ID's in T1 which are not in T2"  Query 1 seems to be doing just fine so I would say that's the way t...
   Author: Mark Grover, 2012-11-09, 16:34
Re: Reduce phase hangs - Hive - [mail # user]
...It could be the order by since all the output records have to go through a single reducer to get ordered.  Can you remove the order by and re-try the query?  You can read up more a...
   Author: Mark Grover, 2012-11-09, 07:19
[expand - 3 more] - Re: Alter table is giving error - Hive - [mail # user]
...Chunky, I just tried it myself. It turns out that the directory you are adding as partition has to be empty for msck repair to work. This is obviously sub-optimal and there is a JIRA in plac...
   Author: Mark Grover, 2012-11-07, 06:52
Re: TRANSFORM + LATERAL VIEW? - Hive - [mail # user]
...Jamie, Not that I know of.  Assuming you will be using LATERAL VIEW for exploding the data, I can think of 2 options at the top of my head: 1. Pass 'id' column to your transform script....
   Author: Mark Grover, 2012-11-07, 06:04
Re: hive integrate with hbase, map to existed hbase table report column family not exist - Hive - [mail # user]
...Indeed. https://issues.apache.org/jira/browse/HIVE-3243  Sorry you found out about it the hard way!  On Tue, Nov 6, 2012 at 5:46 PM, Chris Gong  wrote:  ...
   Author: Mark Grover, 2012-11-07, 03:18
Re: Hive 0.7.1 with MySQL 5.5 as metastore - Hive - [mail # user]
...Venkatesh, What's the exact integrity constraint error you are seeing?  I'd be curious to see if you restored the data from the mysqldump onto a separate schema/db on MySQL 5.1 server w...
   Author: Mark Grover, 2012-11-06, 01:17
Re: ClassNotFoundException when use hive java client of hive + hbase integration - Hive - [mail # user]
...Cheng, You will have to add the appropriate HBase related jars to your class path.  You can do that by running "add jar" command(s) or put it in aux_lib. See this thread for reference: ...
   Author: Mark Grover, 2012-11-06, 01:03
Re: Apache Hive and Apache Cassandra integration - Hive - [mail # user]
...Shrikant, Someone might know about this than me but https://issues.apache.org/jira/browse/HIVE-1434 shows that this is still a work in progress.  Also, I am not sure what the link you m...
   Author: Mark Grover, 2012-11-05, 06:05
Re: number of buckets in bucket map join - Hive - [mail # dev]
...Hi Mahsa, Just to elaborate a little further. Bucket joins are quicker than regular joins because they lessen the number of logical multiplications that need to happen between the records fr...
   Author: Mark Grover, 2012-11-01, 14:49
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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