Indhumathi27 commented on a change in pull request #3493: [CARBONDATA-3600] Fix
creating mv timeseries UDF column as partition column
URL: https://github.com/apache/carbondata/pull/3493#discussion_r356948657
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File path:
datamap/mv/core/src/main/scala/org/apache/carbondata/mv/datamap/MVDataMapProvider.scala
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@@ -95,8 +95,11 @@ class MVDataMapProvider(
dataMapSchema.getRelationIdentifier.getTableName,
true)
dropTableCommand.processMetadata(sparkSession)
- DataMapStoreManager.getInstance.unRegisterDataMapCatalog(dataMapSchema)
+ // First, drop datamapschema and unregister datamap from catalog, because
if in
+ // case, unregister fails, datamapschema will not be deleted from system
and cannot
+ // create datamap also again
DataMapStoreManager.getInstance().dropDataMapSchema(dataMapSchema.getDataMapName)
+ DataMapStoreManager.getInstance.unRegisterDataMapCatalog(dataMapSchema)
Review comment:
@akashrn5 dropDatamapschema can fail if only dataschema file is not present
physically. May be deleted in backend. In that case also, we need to do
unregister, to allow user to create datamap again
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