commit | a90243cc5b6a2748b3078cc2d80d8addb4887b75 | [log] [tgz] |
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author | Indhumathi27 <indhumathim27@gmail.com> | Fri Apr 02 20:17:55 2021 +0530 |
committer | ajantha-bhat <ajanthabhat@gmail.com> | Tue May 25 12:29:09 2021 +0530 |
tree | 53e6d18a5eee0d494fdb2ffb7982a98f07fab06c | |
parent | 07c98e877b0287f259d07f7ad8f519f0f60c2b07 [diff] |
[CARBONDATA-4183] Local sort Partition Load and Compaction fix Why is this PR needed? Currently, number of tasks for partition table local sort load, is decided based on input file size. In this case, the data will not be properly sorted, as tasks launched is more. For compaction, number of tasks is equal to number of partitions. If data is huge for a partition, then there can be chances, that compaction will fail with OOM with less memory configurations. What changes were proposed in this PR? When local sort task level property is enabled, For local sort load, divide input files based on the node locality (num of task = num of nodes), which will properly do the local sorting. For compaction, launch task based on task id for a partition, so the task launched for a partition will be more. Does this PR introduce any user interface change? No Is any new testcase added? Yes This closes #4130
Apache CarbonData is an indexed columnar data store solution for fast analytics on big data platform, e.g.Apache Hadoop, Apache Spark, etc.
You can find the latest CarbonData document and learn more at: http://carbondata.apache.org
CarbonData file format is a columnar store in HDFS, it has many features that a modern columnar format has, such as splittable, compression schema ,complex data type etc, and CarbonData has following unique features:
CarbonData is built using Apache Maven, to build CarbonData
Some features are marked as experimental because the syntax/implementation might change in the future.
This is an active open source project for everyone, and we are always open to people who want to use this system or contribute to it. This guide document introduce how to contribute to CarbonData.
To get involved in CarbonData:
Apache CarbonData is an open source project of The Apache Software Foundation (ASF).