Github user xuchuanyin commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1306#discussion_r136254674
--- Diff:
core/src/main/java/org/apache/carbondata/core/datamap/DataMapStoreManager.java
---
@@ -82,7 +90,6 @@ public TableDataMap
createAndRegisterDataMap(AbsoluteTableIdentifier identifier,
List<TableDataMap> tableDataMaps = allDataMaps.get(table);
if (tableDataMaps == null) {
tableDataMaps = new ArrayList<>();
- allDataMaps.put(table, tableDataMaps);
--- End diff --
FYI:
should move this line to the end, otherwise in concurrent scenario, the
other thread will get empty (not null) `tableMaps` in `getDataMap`, which will
result in `Datamap does not exist` exception.
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