2018-07-03 17:40:35,629 DEBUG org.apache.flink.runtime.rest.RestClient                      - Sending request of class class org.apache.flink.runtime.rest.messages.EmptyRequestBody to localhost:8080/blobserver/port
2018-07-03 17:40:35,633 ERROR org.apache.flink.runtime.rest.RestClient                      - Response was not valid JSON.
org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'Failure': was expecting ('true', 'false' or 'null')
 at [Source: org.apache.flink.shaded.netty4.io.netty.buffer.ByteBufInputStream@150e5187; line: 1, column: 9]
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1586)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:521)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.UTF8StreamJsonParser._reportInvalidToken(UTF8StreamJsonParser.java:3464)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.UTF8StreamJsonParser._handleUnexpectedValue(UTF8StreamJsonParser.java:2628)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:854)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:748)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:3847)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3792)
        at org.apache.flink.shaded.jackson2.com.fasterxml.jackson.databind.ObjectMapper.readTree(ObjectMapper.java:2272)
        at org.apache.flink.runtime.rest.RestClient$ClientHandler.readRawResponse(RestClient.java:288)
        at org.apache.flink.runtime.rest.RestClient$ClientHandler.channelRead0(RestClient.java:251)
        at org.apache.flink.shaded.netty4.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
        at org.apache.flink.shaded.netty4.io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
        at org.apache.flink.shaded.netty4.io.netty.handler.codec.ByteToMessageDecoder.channelInactive(ByteToMessageDecoder.java:288)
        at org.apache.flink.shaded.netty4.io.netty.handler.codec.http.HttpClientCodec$Decoder.channelInactive(HttpClientCodec.java:212)
        at org.apache.flink.shaded.netty4.io.netty.channel.CombinedChannelDuplexHandler.channelInactive(CombinedChannelDuplexHandler.java:132)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.invokeChannelInactive(AbstractChannelHandlerContext.java:237)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannelHandlerContext.fireChannelInactive(AbstractChannelHandlerContext.java:223)
        at org.apache.flink.shaded.netty4.io.netty.channel.DefaultChannelPipeline.fireChannelInactive(DefaultChannelPipeline.java:829)
        at org.apache.flink.shaded.netty4.io.netty.channel.AbstractChannel$AbstractUnsafe$7.run(AbstractChannel.java:610)
        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)
        at org.apache.flink.shaded.netty4.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)
        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
        at org.apache.flink.shaded.netty4.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
        at java.lang.Thread.run(Thread.java:748)
2018-07-03 17:40:35,634 ERROR org.apache.flink.runtime.rest.RestClient                      - Unexpected plain-text response: Failure: 404 Not Found