@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 <[email protected]> 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" <[email protected]> 写道： > >Hi, yingjie. > >If the network is not stable, which config parameter I should adjust. > > > >yidan zhao <[email protected]> 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 <[email protected]> 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 <[email protected]> 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.
