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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-4269) Decrease log level in RuntimeMonitorHandler
Date Wed, 27 Jul 2016 14:28:20 GMT
Ufuk Celebi created FLINK-4269:
----------------------------------

             Summary: Decrease log level in RuntimeMonitorHandler
                 Key: FLINK-4269
                 URL: https://issues.apache.org/jira/browse/FLINK-4269
             Project: Flink
          Issue Type: Improvement
          Components: Webfrontend
    Affects Versions: 1.1.0
            Reporter: Ufuk Celebi
            Priority: Minor


Having a browser window open which points to a page of an unavailable job (for example from
a previous cluster setup) leads to many log warning messages like this in the job manager
log file:

{code}
2016-06-30 10:50:55,812 WARN  org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler  
  - Error while handling request
org.apache.flink.runtime.webmonitor.NotFoundException: Could not find job with id 343bd3c0c7415370d79e04f305b5a2e9
	at org.apache.flink.runtime.webmonitor.handlers.AbstractExecutionGraphRequestHandler.handleRequest(AbstractExecutionGraphRequestHandler.java:58)
	at org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler.respondAsLeader(RuntimeMonitorHandler.java:135)
	at org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler.channelRead0(RuntimeMonitorHandler.java:112)
	at org.apache.flink.runtime.webmonitor.RuntimeMonitorHandler.channelRead0(RuntimeMonitorHandler.java:60)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
	at io.netty.handler.codec.http.router.Handler.routed(Handler.java:62)
	at io.netty.handler.codec.http.router.DualAbstractHandler.channelRead0(DualAbstractHandler.java:57)
	at io.netty.handler.codec.http.router.DualAbstractHandler.channelRead0(DualAbstractHandler.java:20)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
	at org.apache.flink.runtime.webmonitor.HttpRequestHandler.channelRead0(HttpRequestHandler.java:104)
	at org.apache.flink.runtime.webmonitor.HttpRequestHandler.channelRead0(HttpRequestHandler.java:65)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:242)
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:147)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:339)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:324)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:847)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:137)
{code}

Since the REST API calls are refreshed every X seconds, this can lead to quite some log pollution.
We might consider decreasing the log level to DEBUG or TRACE even.




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