jackylk commented on a change in pull request #3426: [CARBONDATA-3560] Fixed issues for Add Segment
URL:
https://github.com/apache/carbondata/pull/3426#discussion_r342401597
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File path: integration/spark2/src/main/scala/org/apache/spark/sql/execution/command/management/CarbonAddLoadCommand.scala
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@@ -92,6 +92,23 @@ case class CarbonAddLoadCommand(
val segmentPath = options.getOrElse(
"path", throw new UnsupportedOperationException("PATH is manadatory"))
+ val allSegments = SegmentStatusManager.readLoadMetadata(carbonTable.getMetadataPath)
+
+ // If a path is already added then we should block the adding of the same path again.
+ allSegments.exists { a =>
+ a.getPath != null && a.getPath.equalsIgnoreCase(segmentPath)
+ throw new AnalysisException(s"Cannot add the segment. This path is already in use by " +
+ s"another segment.")
+ }
+
+ val format = options.getOrElse("format", "carbondata")
+ val isCarbonFormat = format.equalsIgnoreCase("carbondata") || format.equalsIgnoreCase("carbon")
+
+ // If in the given location no carbon files are found then we can throw an exception
+ if (isCarbonFormat && SegmentFileStore.getListOfCarbonIndexFiles(segmentPath).isEmpty) {
Review comment:
If we need to check this, better to check weather index file and data file are matching:
1. If it has merge index file, all data file should be present in merge index file
2. otherwise, one index file for one data file should present
please move this validation to another function and invoke it here
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