[GitHub] [carbondata] kunal642 commented on a change in pull request #3166: [CARBONDATA-3332] Blocked concurrent compaction and update/delete

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kunal642 commented on a change in pull request #3166: [CARBONDATA-3332] Blocked concurrent compaction and update/delete
URL: https://github.com/apache/carbondata/pull/3166#discussion_r269892680
 
 

 ##########
 File path: integration/spark2/src/main/scala/org/apache/carbondata/spark/rdd/CarbonDataRDDFactory.scala
 ##########
 @@ -867,27 +868,34 @@ object CarbonDataRDDFactory {
         val lock = CarbonLockFactory.getCarbonLockObj(
           carbonTable.getAbsoluteTableIdentifier,
           LockUsage.COMPACTION_LOCK)
-
-        if (lock.lockWithRetries()) {
-          LOGGER.info("Acquired the compaction lock.")
-          try {
-            startCompactionThreads(sqlContext,
-              carbonLoadModel,
-              storeLocation,
-              compactionModel,
-              lock,
-              compactedSegments,
-              operationContext
-            )
-          } catch {
-            case e: Exception =>
-              LOGGER.error(s"Exception in start compaction thread. ${ e.getMessage }")
-              lock.unlock()
-              throw e
+        val updateLock = CarbonLockFactory.getCarbonLockObj(carbonTable
+          .getAbsoluteTableIdentifier, LockUsage.UPDATE_LOCK)
+        try {
+          if (updateLock.lockWithRetries()) {
+            if (lock.lockWithRetries()) {
+              LOGGER.info("Acquired the compaction lock.")
+              startCompactionThreads(sqlContext,
+                carbonLoadModel,
+                storeLocation,
+                compactionModel,
+                lock,
+                compactedSegments,
+                operationContext
+              )
+            } else {
+              LOGGER.error("Not able to acquire the compaction lock for table " +
+                           s"${ carbonLoadModel.getDatabaseName }.${ carbonLoadModel.getTableName}")
+            }
+          } else {
+            throw new ConcurrentOperationException(carbonTable, "update", "compaction")
           }
-        } else {
-          LOGGER.error("Not able to acquire the compaction lock for table " +
-                       s"${ carbonLoadModel.getDatabaseName }.${ carbonLoadModel.getTableName}")
+        } catch {
+          case e: Exception =>
+            LOGGER.error(s"Exception in start compaction thread.", e)
+            lock.unlock()
+            throw e
+        } finally {
+          updateLock.unlock()
 
 Review comment:
   @qiuchenjian During load we are already taking this into consideration. Check SegmentStatusManager.deleteLoadsAndUpdateMetadata which is called from load flow.

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