EMR Spark - TransportClient:无法发送 RPC [英] EMR Spark - TransportClient: Failed to send RPC

问题描述

我收到此错误，我尝试增加集群实例以及执行程序和驱动程序参数中的内存，但没有成功.

I'm getting this error, I tried to increase memory on cluster instances and in the executor and driver parameters without success.

17/05/07 23:17:07 ERROR TransportClient: Failed to send RPC 6465703946954088562 to ip-172-30-12-164.eu-central-1.compute.internal/172.30.12.164:34706: java.nio.channels.ClosedChannelException

有没有人有任何线索可以解决这个错误?

Does anyone have any clue to fix this error?

顺便说一句，我使用 YARN 作为集群管理器

BTW I'm using YARN as cluster manager

提前致谢

推荐答案

最后我解决了这个问题.这是由于磁盘空间不足.一列 hadoop 日志显示:

Finally I resolved the problem. It was due to insufficient disk space. One column of hadoop logs showed:

Hadoop YARN:1/1 本地目录不好:/var/lib/hadoop-yarn/cache/yarn/nm-local-dir；1/1 日志目录不好:/var/log/hadoop-yarn/containers

Hadoop YARN: 1/1 local-dirs are bad: /var/lib/hadoop-yarn/cache/yarn/nm-local-dir; 1/1 log-dirs are bad: /var/log/hadoop-yarn/containers

谷歌搜索我发现 http://gethue.com/hadoop-yarn-11-local-dirs-are-bad-varlibhadoop-yarncacheyarnnm-local-dir-11-log-dirs-are-bad-varloghadoop-yarncontainers/

如果出现此错误，请腾出一些磁盘空间！"

"If you are getting this error, make some disk space!"

要查看此错误，我必须激活 EMR 中的纱线日志.见

To see this error I have to activate the yarn logs in EMR. See

http://docs.aws.amazon.com/emr/latest/ManagementGuide/emr-web-interfaces.html

为了访问集群 ec2 实例中的日志端口，我为它更改了安全组

To have access to the logs port in the cluster ec2 instances I changed security groups for it

即:

主实例在这里监听:172.30.12.84:8088 和核心这里的实例:172.30.12.21:8042

master instance was listening here: 172.30.12.84:8088 And core instance here: 172.30.12.21:8042

最后，我解决了在 etl.py 中更改其他具有更大磁盘的实例类型的问题:

Finally I fixed the problem changing in etl.py the type of instances by other ones with bigger disks:

大师:m3.2xlarge
核心:c3.4xlarge

master: m3.2xlarge
core: c3.4xlarge

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