IdBlockStore: changing default size

Change-Id: I3d3bf42cbef4590c345cd6b1b4f871da8d617568
diff --git a/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedIdBlockStore.java b/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedIdBlockStore.java
index 47623f0..6fe9a59 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedIdBlockStore.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/core/impl/DistributedIdBlockStore.java
@@ -35,7 +35,7 @@
 @Service
 public class DistributedIdBlockStore implements IdBlockStore {
 
-    private static final long DEFAULT_BLOCK_SIZE = 0x1000L;
+    private static final long DEFAULT_BLOCK_SIZE = 0x100000L;
 
     protected Map<String, IAtomicLong> topicBlocks;