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[HIVE-1662] Add file pruning into Hive.
...now hive support filename virtual column. if a file name filter presents in a query, hive should be able to only add files which passed the filter to input paths....
, 2017-12-31, 09:35
[HIVE-1881] Make the MetaStore filesystem interface pluggable via the hive.metastore.fs.handler.class configuration property
...>>@Yongqiang: What's the motivation for doing this?This is to work with some internal hacky codes about doing delete. There should be no impact if you use open source hadoop.But the id...
, 2015-11-03, 01:54
[HIVE-1950] Block merge for RCFile
...In our env, there are a lot of small files inside one partition/table. In order to reduce the namenode load, we have one dedicated housekeeping job running to merge these file. Right now the...
, 2015-07-07, 07:38
[HIVE-781] Integrate Zebra with Hive
...This is raised for my research....
, 2014-09-08, 08:23
[HIVE-2206] add a new optimizer for query correlation discovery and optimization
...This issue proposes a new logical optimizer called Correlation Optimizer, which is used to merge correlated MapReduce jobs (MR jobs) into a single MR job. The idea is based on YSmart (http:/...
, 2014-07-15, 06:57
[HIVE-2089] Add a new input format to be able to combine multiple .gz text files
...For files that is not splittable, CombineHiveInputFormat won't help. This jira is to add a new inputformat to support this feature. This is very useful for partitions with tens of thousands ...
, 2014-06-27, 17:25
[HIVE-1889] add an option (hive.index.compact.file.ignore.hdfs) to ignore HDFS location stored in index files.
...In the current code, we use the whole hdfs path in index files to choose splits to run mapreduce job.If the data got moved or the name of the cluster got changed, the index data should still...
, 2014-04-05, 21:56
[HIVE-1953] Hive should process comments in CliDriver
...If you put commend before a set command, it will faile. Like this:– TestSerDe is a user defined serde where the default delimiter is Ctrl-B– the user is overwriting it with ctrlC...
, 2013-05-16, 21:10
[HIVE-1384] HiveServer should run as the user who submitted the query.
, 2013-02-09, 08:16
[HIVE-1472] reduce the usage of HashMap and List.iterator.
...HashMap is used in a lot of places in Hive. Most times we can just replace it with native array. List.iterator() give a lot of pressure to Java GC, we should avoid it.Another thing we can al...
, 2013-01-20, 15:11
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