KanakaKumar commented on a change in pull request #3183: [CARBONDATA-3349] Show
sort_columns for each segment
URL: https://github.com/apache/carbondata/pull/3183#discussion_r281172034
##########
File path:
integration/spark-common/src/main/scala/org/apache/carbondata/api/CarbonStore.scala
##########
@@ -137,14 +159,65 @@ object CarbonStore {
mergedTo,
load.getFileFormat.toString,
Strings.formatSize(dataSize.toFloat),
- Strings.formatSize(indexSize.toFloat))
+ Strings.formatSize(indexSize.toFloat),
+ isSorted,
+ sortColumns)
}
}.toSeq
} else {
Seq.empty
}
}
+ private def getSortColumnsOfSegment(
+ load: LoadMetadataDetails,
+ readCommitScope: ReadCommittedScope,
+ tableDataMap: TableDataMap,
+ hadoopConf: Configuration
+ ): (String, String) = {
+ // isSorted has 3 options: true, false, ""(for legacy store, before
version 1.5.1)
+ var isSorted = ""
+ // when isSorted is true, need show sort_columns
+ var sortColumns = ""
+ if (load.getFileFormat == FileFormat.ROW_V1) {
+ isSorted = "false"
+ } else if (tableDataMap != null &&
load.getVisibility.equalsIgnoreCase("true")) {
+ val indexHeader = SegmentIndexFileStore
+ .getIndexHeaderOfSegment(load,
+ readCommitScope,
+ tableDataMap.getDataMapFactory.asInstanceOf[BlockletDataMapFactory])
+ if (indexHeader != null && indexHeader.isSetIs_sort) {
+ if (indexHeader.is_sort) {
+ isSorted = "true"
+ val columns = indexHeader.getTable_columns
+ sortColumns = (0 until columns.size())
+ .map { index =>
+ val column = columns.get(index)
+ if (column.isDimension && !column.isInvisible) {
+ val properties = column.getColumnProperties
+ if (properties != null) {
Review comment:
Can be simplified to combine multiple conditions to avoid many return null
for readability
if(properties != null && properties.get(CarbonCommonConstants.SORT_COLUMNS)
!= null)
{
column.column_name
}
else
{
null
}
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