commit | 686c20c0f51ad9f3d48c8ffde83e8bd4f58d254e | [log] [tgz] |
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author | akashrn5 <akashnilugal@gmail.com> | Thu Sep 12 14:30:48 2019 +0530 |
committer | kunal642 <kunalkapoor642@gmail.com> | Thu Oct 03 14:50:05 2019 +0530 |
tree | 93681a43618075787b50c788d7c322e987aca0d6 | |
parent | 5b7606259d1b3dd3f25223118039dc79e6216909 [diff] |
[CARBONDATA-3526]Fix cache issue during update and query Problem: When multiple updates happen on table, cache is loaded during update operation, but since on second update the horizontal compaction happens inside the segment, already loaded into cache are invalid. So if we do clean files, physical deletion of horizontal compacted takes place, but still the cache contains old files. So when select query is fired, query fails with file not found exception. Solution: once after horizontal compaction is finished, new compacted files are generated, so the segments inside cache are now invalid, so clear the cache of invalid segment after horizontal compaction. During drop cache command, clear the cache of segmentMap also. This closes #3385
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).