commit | 4145f6f4d573c0da07d39fda4edd6704621824cc | [log] [tgz] |
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author | haomarch <marchpure@126.com> | Sat Jun 20 13:04:58 2020 +0800 |
committer | xubo245 <601450868@qq.com> | Tue Jun 23 15:16:36 2020 +0800 |
tree | 279192e66f7af81d1726d282fbd01f2d80708338 | |
parent | b36fc3ec05abd8a1f631d480a6759d04df5b03f2 [diff] |
[CARBONDATA-3860] Fix IndexServer keeps loading some segments index repeatly Why is this PR needed? In current getTableBlockIndexUniqueIdentifiers function. if the segmentBlockIndexInfo.getSegmentMetaDataInfo() is null, the IndexServer will keeps loading the index of this segment repeatly. We shall avoid to let it affect query performance, considering MetaDataInfo doesn't matter with the query processing. What changes were proposed in this PR? Return the cached index directly if segmentBlockIndexInfo.getTableBlockIndexUniqueIdentifiers() is not empty Does this PR introduce any user interface change? NO Is any new testcase added? NO This closes #3795
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).