[GitHub] [phoenix] gokceni commented on a change in pull request #640: PHOENIX-5578 - CREATE TABLE IF NOT EXISTS loads IndexRegionObserver o…

[GitBox <gi...@apache.org>]

gokceni commented on a change in pull request #640: PHOENIX-5578 - CREATE TABLE IF NOT EXISTS loads IndexRegionObserver o…
URL: https://github.com/apache/phoenix/pull/640#discussion_r349394369
 
 

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 File path: phoenix-core/src/main/java/org/apache/phoenix/query/ConnectionQueryServicesImpl.java
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 @@ -999,6 +1007,23 @@ private void addCoprocessors(byte[] tableName, HTableDescriptor descriptor, PTab
         }
     }
 
+    private boolean doesPhoenixTableAlreadyExist(HTableDescriptor existingDesc) {
+        //if the table descriptor already has Phoenix coprocs, we assume it's
+        //already gone through a Phoenix create statement once
+        if (existingDesc == null){
+            return false;
+        }
+        boolean hasScanObserver = existingDesc.hasCoprocessor(ScanRegionObserver.class.getName());
+        boolean hasUnAggObserver = existingDesc.hasCoprocessor(
+            UngroupedAggregateRegionObserver.class.getName());
+        boolean hasGroupedObserver = existingDesc.hasCoprocessor(
+            GroupedAggregateRegionObserver.class.getName());
+        boolean hasIndexObserver = existingDesc.hasCoprocessor(Indexer.class.getName())
+            || existingDesc.hasCoprocessor(IndexRegionObserver.class.getName())
+            || existingDesc.hasCoprocessor(GlobalIndexChecker.class.getName());
+        return hasScanObserver && hasUnAggObserver && hasGroupedObserver && hasIndexObserver;
 
 Review comment:
   Rather than checking coprocessors one by one, why don't we check that the coprocessors on the table length is greater than 0? 

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