commit | 070d7e70fa8aa88815825bbbccb4ba86eedc5d4a | [log] [tgz] |
---|---|---|
author | Jacky Li <jacky.likun@qq.com> | Mon Feb 17 19:06:37 2020 +0800 |
committer | ajantha-bhat <ajanthabhat@gmail.com> | Tue Feb 25 18:20:49 2020 +0530 |
tree | 81d229b3a6b4e23a42edc9e813d080a364d68067 | |
parent | 4e8f819ff5e836f99315bbb94603526af66ccdd4 [diff] |
[CARBONDATA-3710] Make stage files queryable Why is this PR needed? Currenlty, stage files are written by SDK to a temp folder inside carbondata table path, but it is only queryable after calling "INSERT INTO tableName STAGE" command, it makes data latency longer. What changes were proposed in this PR? This PR is to add a feature to make stage files queryable before inserting them into the table. Since these stage files do not have index, they need to be scanned like normal columnar files Does this PR introduce any user interface change? Yes (One configuration called "carbon.query.stage.input.enable" is added, document added) Is any new testcase added? No (current testcase is enhanced to test querying the stage files, see TestCarbonWriter) This closes #3627
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
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).