commit | 226323be5cf4525cc2719bcafe1b86628d6c5db1 | [log] [tgz] |
---|---|---|
author | QiangCai <qiangcai@qq.com> | Mon Jul 27 15:01:25 2020 +0800 |
committer | ajantha-bhat <ajanthabhat@gmail.com> | Mon Jul 27 20:47:25 2020 +0530 |
tree | 046826c57f2caac345d870e862178b332b5eae98 | |
parent | 30eefe3d226e35bd7c9ed0f1c4c77c5b22809b76 [diff] |
[CARBONDATA-3924] Add default dynamic parameters only one time in one JVM process Why is this PR needed? PR#3805 introduces a problem that the system will add default dynamic parameters many times in a JVM process at concurrent query case. If ConfigEntry.registerEntry method registers an exists entry again, it will throw exception. What changes were proposed in this PR? Invoking CarbonSQLConf.addDefaultParams only one time in a JVM process Does this PR introduce any user interface change? No Is any new testcase added? No This closes #3863
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).