xubo245 commented on a change in pull request #3795:
URL: https://github.com/apache/carbondata/pull/3795#discussion_r443917288
##########
File path:
core/src/main/java/org/apache/carbondata/core/indexstore/blockletindex/BlockletIndexFactory.java
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@@ -352,9 +352,12 @@ private void modifyColumnSchemaForSortColumn(ColumnSchema
columnSchema, boolean
throws IOException {
SegmentBlockIndexInfo segmentBlockIndexInfo =
segmentMap.get(segment.getSegmentNo());
Set<TableBlockIndexUniqueIdentifier> tableBlockIndexUniqueIdentifiers =
null;
- if (null != segmentBlockIndexInfo && null !=
segmentBlockIndexInfo.getSegmentMetaDataInfo()) {
- segment.setSegmentMetaDataInfo(
- segmentMap.get(segment.getSegmentNo()).getSegmentMetaDataInfo());
+ if (null != segmentBlockIndexInfo
+ &&
segmentBlockIndexInfo.getTableBlockIndexUniqueIdentifiers().size() > 0) {
Review comment:
Suggestion：use CollectionUtils.isNotEmpty() to judge
segmentBlockIndexInfo.getTableBlockIndexUniqueIdentifiers()， isNotEmpty include
judge null
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