commit | b36fc3ec05abd8a1f631d480a6759d04df5b03f2 | [log] [tgz] |
---|---|---|
author | haomarch <marchpure@126.com> | Wed Jun 17 18:44:20 2020 +0800 |
committer | liuzhi <371684521@qq.com> | Fri Jun 19 15:23:07 2020 +0800 |
tree | db106ebc39eeb51dfa18b9ad32d4ec5e1117e485 | |
parent | daee357673a2dc194c2b1d5762baee40f47d23f3 [diff] |
[CARBONDATA-3856] Support the LIMIT operator for show segments command Why is this PR needed? When the number segments is large, "SHOW SEGMENTS" time overhead is too high. The LIMIT operator shall be supported in the SHOW SEGMENTS command. What changes were proposed in this PR? Add LIMIT operator in the grammar parsing and read segments function. Does this PR introduce any user interface change? YES Is any new testcase added? YES This closes #3792
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).