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[HIVE-5771] Constant propagation optimizer for Hive - Hive - [issue]
...Currently there is no constant folding/propagation optimizer, all expressions are evaluated at runtime. HIVE-2470 did a great job on evaluating constants on UDF initializing phase, however, ...
http://issues.apache.org/jira/browse/HIVE-5771    Author: Ted Xu, 2014-12-05, 03:14
Re: Database view of the file system - Hive - [mail # user]
...Hi Mark,I'm not sure if there is more elegant solution, but if you have fullcontrol of the HDFS namenode, you can try parse Hadoop Audit Logs.You can find more information here:http://wiki.a...
   Author: Ted Xu, 2014-07-28, 04:14
Unit test failed because of statistics mismatch? - Hive - [mail # user]
...Hi all,  I have problem running several unit tests related to statistics, e.g., alter_partition_coltype.q.  The diff log is listed following:   Running: diff -a /home/tedxu/sr...
   Author: Ted Xu, 2014-01-08, 14:18
[expand - 2 more] - Re: Extremely slow throughput with dynamic partitions using Hive 0.8.1 in Amazon Elastic Mapreduce - Hive - [mail # user]
...Hi Shaun,  Your findings are valid. Hive uses Hadoop job counters to report fatal error, so the client can kill the MapReduce job before it completes.  With regard to your case, be...
   Author: Ted Xu, 2013-06-17, 09:48
Re: How to change the separator of INSERT OVERWRITE LOCAL DIRECTORY - Hive - [mail # user]
...HI Felix,  I believe it is bug not able to change field seperator when sinking data to files. It is already fixed in version 0.11.0. See https://issues.apache.org/jira/browse/HIVE-3682....
   Author: Ted Xu, 2013-05-30, 02:10
Re: Map Join Problems - Hive - [mail # user]
...Hi Peter,  There are other parameters work with hive.auto.convert.join. Please check "hive.hashtable.max.memory.usage" and "hive.smalltable.filesize". They're quite self-explanatory but...
   Author: Ted Xu, 2013-05-28, 06:25
Re: select failed in Hive. java.io.FileNotFoundException - Hive - [mail # user]
...Hi Gautier,  Looks you're running Hive on top of local filesystem. The exception stack said you haven't created staging directory. You can try creating the directory manually, or changi...
   Author: Ted Xu, 2013-05-14, 01:45
[HIVE-1342] Predicate push down get error result when sub-queries have the same alias name - Hive - [issue]
...Query is over-optimized by PPD when sub-queries have the same alias name, see the query:-------------------------------create table if not exists dm_fact_buyer_prd_info_d ( category_id stri...
http://issues.apache.org/jira/browse/HIVE-1342    Author: Ted Xu, 2011-12-16, 23:57
[HIVE-2416] Multiple distinct function to support hive.groupby.skewindata optimization - Hive - [issue]
...Currently when multiple distinct function is used, hive.groupby.skewindata optimization parameter shall be set false, or else an exception is raised:Error in semantic analysis: DISTINCT on d...
http://issues.apache.org/jira/browse/HIVE-2416    Author: Ted Xu, 2011-10-24, 20:26
[HIVE-1982] Group by key shall not duplicate with distinct key - Hive - [issue]
...Group by key shall not duplicate with distinct key, or there will be error because RowResolver and ColumnInfo didn't match....
http://issues.apache.org/jira/browse/HIVE-1982    Author: Ted Xu, 2011-02-25, 18:54
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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