Exception : Invocation of inefficient entrySet

Latest build of controller is not working due to the following exception. This is happening on master.

2014-11-18 15:00:34,953 | WARN | WriteTxCommit-0 | UnmodifiableChildrenMap | 101 - org.opendaylight.yangtools.yang-data-impl - 0.7.0.SNAPSHOT | Invocation of inefficient entrySet()
java.lang.Throwable
at org.opendaylight.yangtools.yang.data.impl.schema.nodes.UnmodifiableChildrenMap.entrySet(UnmodifiableChildrenMap.java:118)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at java.util.HashMap.putAllForCreate(HashMap.java:554)[:1.7.0_67]
at java.util.HashMap.<init>(HashMap.java:298)[:1.7.0_67]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.AbstractImmutableDataContainerNodeBuilder.checkDirty(AbstractImmutableDataContainerNodeBuilder.java:65)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.AbstractImmutableDataContainerNodeBuilder.withChild(AbstractImmutableDataContainerNodeBuilder.java:81)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.AbstractImmutableDataContainerNodeAttrBuilder.withChild(AbstractImmutableDataContainerNodeAttrBuilder.java:55)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapEntryNodeBuilder.withChild(ImmutableMapEntryNodeBuilder.java:89)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapEntryNodeBuilder.withChild(ImmutableMapEntryNodeBuilder.java:22)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.AbstractImmutableDataContainerNodeBuilder.addChild(AbstractImmutableDataContainerNodeBuilder.java:102)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableMapEntryNodeBuilder.addChild(ImmutableMapEntryNodeBuilder.java:22)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.AbstractImmutableDataContainerNodeBuilder.addChild(AbstractImmutableDataContainerNodeBuilder.java:21)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.mutateChildren(NormalizedNodeContainerModificationStrategy.java:127)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.applySubtreeChange(NormalizedNodeContainerModificationStrategy.java:154)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.DataNodeContainerModificationStrategy$ListEntryModificationStrategy.applySubtreeChange(DataNodeContainerModificationStrategy.java:133)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.SchemaAwareApplyOperation.apply(SchemaAwareApplyOperation.java:209)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.mutateChildren(NormalizedNodeContainerModificationStrategy.java:123)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.applySubtreeChange(NormalizedNodeContainerModificationStrategy.java:154)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy$UnorderedMapModificationStrategy.applySubtreeChange(NormalizedNodeContainerModificationStrategy.java:312)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.SchemaAwareApplyOperation.apply(SchemaAwareApplyOperation.java:209)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.mutateChildren(NormalizedNodeContainerModificationStrategy.java:123)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.applySubtreeChange(NormalizedNodeContainerModificationStrategy.java:154)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.DataNodeContainerModificationStrategy$ContainerModificationStrategy.applySubtreeChange(DataNodeContainerModificationStrategy.java:119)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.SchemaAwareApplyOperation.apply(SchemaAwareApplyOperation.java:209)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.mutateChildren(NormalizedNodeContainerModificationStrategy.java:123)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.NormalizedNodeContainerModificationStrategy.applySubtreeChange(NormalizedNodeContainerModificationStrategy.java:154)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.DataNodeContainerModificationStrategy$ContainerModificationStrategy.applySubtreeChange(DataNodeContainerModificationStrategy.java:119)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.SchemaAwareApplyOperation.apply(SchemaAwareApplyOperation.java:209)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.RootModificationApplyOperation.apply(RootModificationApplyOperation.java:78)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.yangtools.yang.data.impl.schema.tree.InMemoryDataTree.prepare(InMemoryDataTree.java:92)[101:org.opendaylight.yangtools.yang-data-impl:0.7.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore$ThreePhaseCommitImpl$2.call(InMemoryDOMDataStore.java:269)[171:org.opendaylight.controller.sal-inmemory-datastore:1.2.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore$ThreePhaseCommitImpl$2.call(InMemoryDOMDataStore.java:266)[171:org.opendaylight.controller.sal-inmemory-datastore:1.2.0.SNAPSHOT]
at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_67]
at com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:293)[78:com.google.guava:14.0.1]
at com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:61)[78:com.google.guava:14.0.1]
at org.opendaylight.controller.md.sal.dom.store.impl.InMemoryDOMDataStore$ThreePhaseCommitImpl.preCommit(InMemoryDOMDataStore.java:266)[171:org.opendaylight.controller.sal-inmemory-datastore:1.2.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.broker.impl.DOMDataCommitCoordinatorImpl$CommitCoordinationTask.preCommitAll(DOMDataCommitCoordinatorImpl.java:258)[165:org.opendaylight.controller.sal-broker-impl:1.2.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.broker.impl.DOMDataCommitCoordinatorImpl$CommitCoordinationTask.preCommitBlocking(DOMDataCommitCoordinatorImpl.java:228)[165:org.opendaylight.controller.sal-broker-impl:1.2.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.broker.impl.DOMDataCommitCoordinatorImpl$CommitCoordinationTask.call(DOMDataCommitCoordinatorImpl.java:151)[165:org.opendaylight.controller.sal-broker-impl:1.2.0.SNAPSHOT]
at org.opendaylight.controller.md.sal.dom.broker.impl.DOMDataCommitCoordinatorImpl$CommitCoordinationTask.call(DOMDataCommitCoordinatorImpl.java:127)[165:org.opendaylight.controller.sal-broker-impl:1.2.0.SNAPSHOT]
at org.opendaylight.yangtools.util.concurrent.DeadlockDetectingListeningExecutorService$2.call(DeadlockDetectingListeningExecutorService.java:192)[81:org.opendaylight.yangtools.util:0.7.0.SNAPSHOT]
at java.util.concurrent.FutureTask.run(FutureTask.java:262)[:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_67]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_67]
at java.lang.Thread.run(Thread.java:745)[:1.7.0_67]