07:58:20,535 ERROR [UdpManager] (service-scheduler-2) An unexpected problem occurred while reading from channel.
java.lang.ArrayIndexOutOfBoundsException: null
Jul 09, 2019 7:58:21 AM io.grpc.internal.ChannelExecutor drain
WARNING: Runnable threw exception in ChannelExecutor
java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:717)
    at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:957)
    at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1378)
    at io.grpc.internal.DnsNameResolver.resolve(DnsNameResolver.java:201)
    at io.grpc.internal.DnsNameResolver.refresh(DnsNameResolver.java:128)
    at io.grpc.internal.ManagedChannelImpl$LbHelperImpl$1.onStateChange(ManagedChannelImpl.java:661)
    at io.grpc.internal.InternalSubchannel$2.run(InternalSubchannel.java:270)
    at io.grpc.internal.ChannelExecutor.drain(ChannelExecutor.java:72)
    at io.grpc.internal.InternalSubchannel$TransportListener.transportShutdown(InternalSubchannel.java:493)
    at io.grpc.netty.ClientTransportLifecycleManager.notifyShutdown(ClientTransportLifecycleManager.java:53)
    at io.grpc.netty.NettyClientHandler.goingAway(NettyClientHandler.java:602)
    at io.grpc.netty.NettyClientHandler.access$200(NettyClientHandler.java:79)
    at io.grpc.netty.NettyClientHandler$1.onGoAwayReceived(NettyClientHandler.java:206)
    at io.netty.handler.codec.http2.DefaultHttp2Connection.goAwayReceived(DefaultHttp2Connection.java:232)
    at io.netty.handler.codec.http2.DefaultHttp2ConnectionDecoder.onGoAwayRead0(DefaultHttp2ConnectionDecoder.java:166)
    at io.netty.handler.codec.http2.DefaultHttp2ConnectionDecoder$FrameReadListener.onGoAwayRead(DefaultHttp2ConnectionDecoder.java:495)
    at io.netty.handler.codec.http2.Http2InboundFrameLogger$1.onGoAwayRead(Http2InboundFrameLogger.java:119)
    at io.netty.handler.codec.http2.DefaultHttp2FrameReader.readGoAwayFrame(DefaultHttp2FrameReader.java:592)
    at io.netty.handler.codec.http2.DefaultHttp2FrameReader.processPayloadState(DefaultHttp2FrameReader.java:272)
    at io.netty.handler.codec.http2.DefaultHttp2FrameReader.readFrame(DefaultHttp2FrameReader.java:160)
    at io.netty.handler.codec.http2.Http2InboundFrameLogger.readFrame(Http2InboundFrameLogger.java:41)
    at io.netty.handler.codec.http2.DefaultHttp2ConnectionDecoder.decodeFrame(DefaultHttp2ConnectionDecoder.java:118)
    at io.netty.handler.codec.http2.Http2ConnectionHandler$FrameDecoder.decode(Http2ConnectionHandler.java:383)
    at io.netty.handler.codec.http2.Http2ConnectionHandler.decode(Http2ConnectionHandler.java:443)
    at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
    at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1336)
    at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1127)
    at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1162)
    at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1359)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:935)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
    at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
    at java.lang.Thread.run(Thread.java:748)