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Re: help on failed MR jobs (big hive files) - Hive - [mail # user]
...Elaine, Nitin raises some good points.  Continuing on the same lines, let's take a closer look at the query: insert overwrite table B select a, b, c from table A where datediff(to_date(...
   Author: Mark Grover, 2012-12-13, 07:46
Re: map side join with group by - Hive - [mail # user]
...Hi Chen, I think we would need some more information.  The query is referring to a table called "d" in the MAPJOIN hint but there is not such table in the query. Moreover, Map joins onl...
   Author: Mark Grover, 2012-12-13, 01:41
Re: Hive double-precision question - Hive - [mail # user]
...Periya: If you want to see what the built in Hive UDFs are doing, the code is here: https://github.com/apache/hive/tree/trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/generic and https://gi...
   Author: Mark Grover, 2012-12-07, 22:02
Re: Determining DateDiff By Minutes in Hive - Hive - [mail # user]
...George, There is a datediff UDF which will tell you the difference between 2 dates. https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-DateFunctions  ...
   Author: Mark Grover, 2012-12-05, 20:53
Re: handling null argument in custom udf - Hive - [mail # user]
...Soren, Can you give the complete stack trace? Or share the code? Perhaps, the skeletal code. Look at Ceil UDF for example, it has a null check, you should be able to do something similar: ht...
   Author: Mark Grover, 2012-12-05, 03:31
Re: cross join - Hive - [mail # user]
...Periya, I am using Hive-0.8.1 and was able to get joins to work with: 1. No on clause 2. "on (true)" as the on clause to work.  I am not entirely sure why you are getting exceptions wit...
   Author: Mark Grover, 2012-12-04, 07:59
Re: Hive 0.7 use the old mapred API - Hive - [mail # user]
...Yong, In my opinion, #2 wouldn't be that hard to do.  Of course, upgrading to the new API (albeit by updating Hive) would the right thing to do long term.  Mark  On Mon, Dec 3...
   Author: Mark Grover, 2012-12-04, 07:47
[expand - 1 more] - Re: Skew join failure - Hive - [mail # user]
...Hey David, Sure thing. Play around with that property's value, see if that makes any difference.  Also, if you could search to see if a file with a name like *hive_skew_join_ **bigkeys*...
   Author: Mark Grover, 2012-12-04, 06:01
Re: Storing data in TSV with changing headers - Hive - [mail # user]
...Hi Marc, While what Dean said is true for different schemas in general, there is a way to do it all in the same table if the schema changes to the TSV file are just additions of new tab-sepa...
   Author: Mark Grover, 2012-11-30, 15:12
[expand - 4 more] - Re: Hive Loading Zip CSV Files - Hive - [mail # user]
...Adding [EMAIL PROTECTED]  Ben, That's great to hear. It would be awesome if you'd like to contribute this back to Hive so others in the community could use it too. Let us know what you ...
   Author: Mark Grover, 2012-11-29, 18:03
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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