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[GitHub] [carbondata] VenuReddy2103 commented on a change in pull request #4000: [CARBONDATA-4020] Fixed drop index when multiple index exists

Posted by GitBox on Nov 27, 2020; 6:45am
URL: http://apache-carbondata-dev-mailing-list-archive.168.s1.nabble.com/GitHub-carbondata-nihal0107-opened-a-new-pull-request-4000-WIP-CARBONDATA-4020-Fixed-drop-index-whens-tp103032p103716.html


VenuReddy2103 commented on a change in pull request #4000:
URL: https://github.com/apache/carbondata/pull/4000#discussion_r531409321



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File path: integration/spark/src/main/scala/org/apache/spark/sql/execution/command/index/DropIndexCommand.scala
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@@ -184,10 +184,12 @@ private[sql] case class DropIndexCommand(
         parentCarbonTable = getRefreshedParentTable(sparkSession, dbName)
         val indexMetadata = parentCarbonTable.getIndexMetadata
         if (null != indexMetadata && null != indexMetadata.getIndexesMap) {
-          val hasCgFgIndexes =
-            !(indexMetadata.getIndexesMap.size() == 1 &&
-              indexMetadata.getIndexesMap.containsKey(IndexType.SI.getIndexProviderName))
-          if (hasCgFgIndexes) {
+          // check if any CG or FG index exists. If not exists,

Review comment:
       For example, create 2 bloom indexes, Drop both of them. In last index drop, `indexMetadata` will be null at this point(line 186). We do not seem to set `indexExists` property to `false` in that case.




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