Details
Description
curl -k -i --negotiate -u : "https://hadoop3-4.example.com:20004/webhdfs/v1"
DataNode Web UI should do a better error checking/handling.
2018-04-19 10:07:49,338 WARN org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler: INTERNAL_SERVER_ERROR java.lang.NullPointerException at org.apache.hadoop.security.token.Token.decodeWritable(Token.java:364) at org.apache.hadoop.security.token.Token.decodeFromUrlString(Token.java:383) at org.apache.hadoop.hdfs.server.datanode.web.webhdfs.ParameterParser.delegationToken(ParameterParser.java:128) at org.apache.hadoop.hdfs.server.datanode.web.webhdfs.DataNodeUGIProvider.ugi(DataNodeUGIProvider.java:76) at org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.channelRead0(WebHdfsHandler.java:129) at org.apache.hadoop.hdfs.server.datanode.web.URLDispatcher.channelRead0(URLDispatcher.java:51) at org.apache.hadoop.hdfs.server.datanode.web.URLDispatcher.channelRead0(URLDispatcher.java:31) at com.cloudera.io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at com.cloudera.io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at com.cloudera.io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:310) at com.cloudera.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:284) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at com.cloudera.io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1379) at com.cloudera.io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1158) at com.cloudera.io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1193) at com.cloudera.io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489) at com.cloudera.io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428) at com.cloudera.io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) at com.cloudera.io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1359) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) at com.cloudera.io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) at com.cloudera.io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:935) at com.cloudera.io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:138) at com.cloudera.io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645) at com.cloudera.io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580) at com.cloudera.io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497) at com.cloudera.io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) at com.cloudera.io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) at com.cloudera.io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138) at java.lang.Thread.run(Thread.java:748)