GitHub user Zhangshunyu opened a pull request:
https://github.com/apache/incubator-carbondata/pull/603
Fix the bug of inverted index that store inverted index in metadata by
using Encoding.INVERTED_INDEX.
## Why raise this pr?
This pr is the same to #222 , because pr 222 can not reopen, so open a new
pr.
Problem: In current code, inverted index in ddl info is not stored into
store, and when we restart the cluster, query might mismatch.
To fix problem 1, current code set always true to use inverted index, and
we can not configure inverted index now. We should fix this problem from its
root cause.
## How to solve?
Using the Encoding as the indentifier to check whether using inverted
index, this Encoding is in thrift format now, so we no need to modify the
thrift format.
Here it is the same to the query logic in
CompressedDimensionChunkFileBasedReader:
if
(CarbonUtil.hasEncoding(dimensionColumnChunk.get(blockIndex).getEncodingList(),
Encoding.INVERTED_INDEX)) {
invertedIndexes = CarbonUtil
.getUnCompressColumnIndex(dimensionColumnChunk.get(blockIndex).getRowIdPageLength(),
fileReader.readByteArray(filePath,
dimensionColumnChunk.get(blockIndex).getRowIdPageOffset(),
dimensionColumnChunk.get(blockIndex).getRowIdPageLength()), numberComressor);
// get the reverse index
invertedIndexesReverse = getInvertedReverseIndex(invertedIndexes);
}
it also use Encoding.INVERTED_INDEX to check whether one column is use
inverted index.
## How to test?
Pass all the test cases.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Zhangshunyu/incubator-carbondata fix_index
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-carbondata/pull/603.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #603
----
commit 6c6202b10c9e3bf60830d2fb995b55e5109f59bd
Author: Zhangshunyu <[email protected]>
Date: 2016-09-08T07:48:03Z
Save useInvertedIndex info into thrift store
commit 4d50a6a38901af619a56f4352ae0208be9775e50
Author: Zhangshunyu <[email protected]>
Date: 2016-09-08T07:48:15Z
Save useInvertedIndex info into thrift store
commit a36bf38ffa7e766e09aa4513d4a4b96ef1218639
Author: Zhangshunyu <[email protected]>
Date: 2016-09-08T09:46:12Z
Fix the judge of no_dic_col
commit e3ee06abd032affd098c1d31b6bbab41ce27b747
Author: Zhangshunyu <[email protected]>
Date: 2016-09-08T10:04:20Z
add commont
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