siddhantsangwan commented on a change in pull request #2230:
URL: https://github.com/apache/ozone/pull/2230#discussion_r629851887
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File path:
hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/balancer/ContainerBalancer.java
##########
@@ -59,74 +80,305 @@ public ContainerBalancer(
this.ozoneConfiguration = ozoneConfiguration;
this.balancerRunning = false;
this.config = new ContainerBalancerConfiguration();
+ this.metrics = new ContainerBalancerMetrics();
}
/**
- * Start ContainerBalancer. Current implementation is incomplete.
+ * Starts ContainerBalancer. Current implementation is incomplete.
*
* @param balancerConfiguration Configuration values.
*/
public void start(ContainerBalancerConfiguration balancerConfiguration) {
+ if (balancerRunning) {
+ LOG.info("Container Balancer is already running.");
+ throw new RuntimeException();
+ }
this.balancerRunning = true;
-
ozoneConfiguration = new OzoneConfiguration();
- // initialise configs
this.config = balancerConfiguration;
this.threshold = config.getThreshold();
- this.maxDatanodesToBalance =
- config.getMaxDatanodesToBalance();
+ this.maxDatanodesToBalance = config.getMaxDatanodesToBalance();
this.maxSizeToMove = config.getMaxSizeToMove();
+ this.clusterCapacity = 0L;
+ this.clusterUsed = 0L;
+ this.clusterRemaining = 0L;
+
+ this.overUtilizedNodes = new ArrayList<>();
+ this.underUtilizedNodes = new ArrayList<>();
+ this.aboveAverageUtilizedNodes = new ArrayList<>();
+ this.belowAverageUtilizedNodes = new ArrayList<>();
+ this.sourceNodes = new ArrayList<>();
+
LOG.info("Starting Container Balancer...");
+ LOG.info(toString());
+
+ balance();
+ }
- // sorted list in order from most to least used
- List<DatanodeUsageInfo> nodes = nodeManager.
- getMostOrLeastUsedDatanodes(true);
- double avgUtilisation = calculateAvgUtilisation(nodes);
+ /**
+ * Balances the cluster.
+ */
+ private void balance() {
+ boolean initialized = initializeIteration();
Review comment:
Yes, thanks for pointing this out.
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