ajantha-bhat 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_r356934421
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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:
Now If dropDataMapSchema throws exception, unregister will not happen.
better to keep dropDataMapSchema in try catch and unRegisterDataMapCatalog
in finally block
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