ONOS nodes crash when all nodes are restarted via killing all processes

2016-01-11 13:04:11,909 | ERROR | entLoopGroup-4-1 | rejectedExecution                | 46 - io.netty.common - 4.0.33.Final | Failed to submit a listener notification task. Event loop shut down?
java.util.concurrent.RejectedExecutionException: event executor terminated
        at io.netty.util.concurrent.SingleThreadEventExecutor.reject(SingleThreadEventExecutor.java:715)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor.addTask(SingleThreadEventExecutor.java:300)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor.execute(SingleThreadEventExecutor.java:691)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.DefaultPromise.execute(DefaultPromise.java:671)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.DefaultPromise.notifyLateListener(DefaultPromise.java:641)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.DefaultPromise.addListener(DefaultPromise.java:138)[46:io.netty.common:4.0.33.Final]
        at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:93)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.DefaultChannelPromise.addListener(DefaultChannelPromise.java:28)[48:io.netty.transport:4.0.33.Final]
        at io.netty.bootstrap.ServerBootstrap$ServerBootstrapAcceptor.channelRead(ServerBootstrap.java:252)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.AbstractNioMessageChannel$NioMessageUnsafe.read(AbstractNioMessageChannel.java:93)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)[48:io.netty.transport:4.0.33.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)[46:io.netty.common:4.0.33.Final]
        at java.lang.Thread.run(Thread.java:745)[:1.8.0_25]
2016-01-11 13:04:13,286 | ERROR | entLoopGroup-3-1 | MessageDecoder                   | 123 - org.onosproject.onlab-netty - 1.5.0.SNAPSHOT | Exception inside channel handling pipeline.
io.netty.handler.codec.DecoderException: java.lang.OutOfMemoryError: Java heap space
        at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:431)[50:io.netty.codec:4.0.33.Final]
        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:244)[50:io.netty.codec:4.0.33.Final]
        at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:318)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:304)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)[48:io.netty.transport:4.0.33.Final]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)[48:io.netty.transport:4.0.33.Final]
        at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:112)[46:io.netty.common:4.0.33.Final]
        at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)[46:io.netty.common:4.0.33.Final]
        at java.lang.Thread.run(Thread.java:745)[:1.8.0_25]
Caused by: java.lang.OutOfMemoryError: Java heap space