Hi All,
Since I read latest code of carbon and found that BTree related code is
only used by a test class called`BTreeBlockFinderTest`. So I try delete
those codes and test shows it works fine. But I wonder whether to delete
those code now or anyone thinks it can be used for something else ?
---changes I did:
1. delete 11 files
AbstractBTreeBuilder.java
AbstractBTreeLeafNode.java
BlockBTreeBuilder.java
BlockBTreeLeafNode.java
BTreeDataRefNodeFinder.java
BTreeNode.java
BTreeNonLeafNode.java
BtreeBuilder.java
BTreeBuilderInfo.java
DataRefNodeFinder.java
BTreeBlockFinderTest.java
2. remove following lines of codes and only keep codes in if block, because
all `dataRefNode` are instance of BlockletDataRefNode which created in
IndexWrapper
https://github.com/apache/carbondata/blob/6029b28006d54db74682e9348a92bebdf518d07d/core/src/main/java/org/apache/carbondata/core/scan/result/iterator/AbstractDetailQueryResultIterator.java#L131-L155
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