Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/772#discussion_r39944228
--- Diff:
tajo-catalog/tajo-catalog-server/src/main/java/org/apache/tajo/catalog/store/AbstractDBStore.java
---
@@ -2228,6 +2244,257 @@ private void setPartitionKeys(int pid,
PartitionDescProto.Builder partitionDesc)
return partitions;
}
+ /**
+ * Check if list of partitions exist on catalog.
+ *
+ *
+ * @param databaseId
+ * @param tableId
+ * @return
+ */
+ public boolean existPartitionsOnCatalog(int tableId) {
+ Connection conn = null;
+ ResultSet res = null;
+ PreparedStatement pstmt = null;
+ boolean result = false;
+
+ try {
+ String sql = "SELECT COUNT(*) CNT FROM "
--- End diff --
This is trivial, but you can perform a simple select rather than count
aggregation which is more expensive operation.
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