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Posted to issues@ozone.apache.org by GitBox <gi...@apache.org> on 2020/04/13 23:25:42 UTC
[GitHub] [hadoop-ozone] bharatviswa504 opened a new pull request #815:
HDDS-3219. Write operation when both OM followers are shutdown.
bharatviswa504 opened a new pull request #815: HDDS-3219. Write operation when both OM followers are shutdown.
URL: https://github.com/apache/hadoop-ozone/pull/815
## What changes were proposed in this pull request?
Added a new parameter for om rpc client time out. In this way, it will only affect OM Rpc Client.
## What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-3291
## How was this patch tested?
Tested this on a docker cluster with the below settings. We should increase the timeout duration to a larger value so that OM will think it is the leader for a longer period even though it is not, and the request will be accepted by leader, and it will retry forever.
OZONE-SITE.XML_ozone.om.client.rpc.timeout=30s
OZONE-SITE.XML_ozone.om.leader.election.minimum.timeout.duration=1m
Now with this patch, request fails after 15 retries. And for OM Server which it thinks it is leader, we get SocketTimeOutException, and move to next OM.
Logs:
```
2020-04-13 21:59:44,667 [main] INFO RetryInvocationHandler:411 - com.google.protobuf.ServiceException: java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "om3":9862; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost, while invoking $Proxy20.submitRequest over nodeId=om3,nodeAddress=om3:9862 after 13 failover attempts. Trying to failover immediately.
2020-04-13 21:59:44,667 [main] INFO RetryInvocationHandler:411 - com.google.protobuf.ServiceException: java.net.UnknownHostException: Invalid host name: local host is: (unknown); destination host is: "om1":9862; java.net.UnknownHostException; For more details see: http://wiki.apache.org/hadoop/UnknownHost, while invoking $Proxy20.submitRequest over nodeId=om1,nodeAddress=om1:9862 after 14 failover attempts. Trying to failover immediately.
2020-04-13 22:00:14,677 [main] INFO RetryInvocationHandler:411 - com.google.protobuf.ServiceException: java.net.SocketTimeoutException: Call From 531e9bfac0d9/172.24.0.4 to om2:9862 failed on socket timeout exception: java.net.SocketTimeoutException: 30000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/172.24.0.4:47798 remote=om2/172.24.0.7:9862]; For more details see: http://wiki.apache.org/hadoop/SocketTimeout, while invoking $Proxy20.submitRequest over nodeId=om2,nodeAddress=om2:9862 after 15 failover attempts. Trying to failover immediately.
2020-04-13 22:00:14,678 [main] ERROR OMFailoverProxyProvider:286 - Failed to connect to OMs: [nodeId=om1,nodeAddress=om1:9862, nodeId=om3,nodeAddress=om3:9862, nodeId=om2,nodeAddress=om2:9862]. Attempted 15 failover
```
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[GitHub] [hadoop-ozone] bharatviswa504 merged pull request #815: HDDS-3291.
Write operation when both OM followers are shutdown.
Posted by GitBox <gi...@apache.org>.
bharatviswa504 merged pull request #815: HDDS-3291. Write operation when both OM followers are shutdown.
URL: https://github.com/apache/hadoop-ozone/pull/815
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[GitHub] [hadoop-ozone] bharatviswa504 commented on issue #815: HDDS-3291.
Write operation when both OM followers are shutdown.
Posted by GitBox <gi...@apache.org>.
bharatviswa504 commented on issue #815: HDDS-3291. Write operation when both OM followers are shutdown.
URL: https://github.com/apache/hadoop-ozone/pull/815#issuecomment-614785352
Thank You @arp7 for the review.
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