把其中一个改成0
在 2021-06-17 13:11:01，"yidan zhao" <hinobl...@gmail.com> 写道： >是的，宿主机IP。 > >net.ipv4.tcp_tw_reuse = 1 >net.ipv4.tcp_timestamps = 1 > >东东 <dongdongking...@163.com> 于2021年6月17日周四 下午12:52写道： >> >> 10.35.215.18是宿主机IP？ >> >> 看一下 tcp_tw_recycle和net.ipv4.tcp_timestamps是什么值 >> 实在不行就 tcpdump 吧 >> >> >> >> 在 2021-06-17 12:41:58，"yidan zhao" <hinobl...@gmail.com> 写道： >> >@东东 standalone集群。 随机时间，一会一个的，没有固定规律。 和CPU、内存、网络的话有一定规律，但不确认，因为不是很明显。 >> >我排查过几个exception，时间和网络尖刺对上了，但不全能对上，所以不好说是否有这个原因。 >> > >> >此外，有个点我不是很清楚，网上这个报错很少，类似的都是 >> >RemoteTransportException，然后提示中说taskmager可能已丢失之类。但我的是 >> >LocalTransportException，不清楚netty中这俩错误的含义是不是不一样。目前来看网络上关于这俩异常的资料也查不到什么。 >> > >> >东东 <dongdongking...@163.com> 于2021年6月17日周四 上午11:19写道： >> >> >> >> 单机standalone，还是Docker/K8s ? >> >> >> >> >> >> >> >> 这个异常出现的时机，与周期性的，还是跟CPU、内存，乃至网络流量变化相关？ >> >> >> >> >> >> >> >> 在 2021-06-16 19:10:24，"yidan zhao" <hinobl...@gmail.com> 写道： >> >> >Hi, yingjie. >> >> >If the network is not stable, which config parameter I should adjust. >> >> > >> >> >yidan zhao <hinobl...@gmail.com> 于2021年6月16日周三 下午6:56写道： >> >> >> >> >> >> 2: I use G1, and no full gc occurred, young gc count: 422, time: >> >> >> 142892, so it is not bad. >> >> >> 3: stream job. >> >> >> 4: I will try to config taskmanager.network.retries which is default >> >> >> 0, and taskmanager.network.netty.client.connectTimeoutSec 's default >> >> >> is 120s。 >> >> >> 5: I checked the net fd number of the taskmanager, it is about 1000+, >> >> >> so I think it is a reasonable value. >> >> >> >> >> >> 1: can not be sure. >> >> >> >> >> >> Yingjie Cao <kevin.ying...@gmail.com> 于2021年6月16日周三 下午4:34写道： >> >> >> > >> >> >> > Hi yidan, >> >> >> > >> >> >> > 1. Is the network stable? >> >> >> > 2. Is there any GC problem? >> >> >> > 3. Is it a batch job? If so, please use sort-shuffle, see [1] for >> >> >> > more information. >> >> >> > 4. You may try to config these two options: >> >> >> > taskmanager.network.retries, >> >> >> > taskmanager.network.netty.client.connectTimeoutSec. More relevant >> >> >> > options can be found in 'Data Transport Network Stack' section of >> >> >> > [2]. >> >> >> > 5. If it is not the above cases, it is may related to [3], you may >> >> >> > need to check the number of tcp connection per TM and node. >> >> >> > >> >> >> > Hope this helps. >> >> >> > >> >> >> > [1] >> >> >> > https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/ops/batch/blocking_shuffle/ >> >> >> > [2] >> >> >> > https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/deployment/config/ >> >> >> > [3] https://issues.apache.org/jira/browse/FLINK-22643 >> >> >> > >> >> >> > Best, >> >> >> > Yingjie >> >> >> > >> >> >> > yidan zhao <hinobl...@gmail.com> 于2021年6月16日周三 下午3:36写道： >> >> >> >> >> >> >> >> Attachment is the exception stack from flink's web-ui. Does anyone >> >> >> >> have also met this problem? >> >> >> >> >> >> >> >> Flink1.12 - Flink1.13.1. Standalone Cluster, include 30 containers, >> >> >> >> each 28G mem.
