ivandika3 commented on code in PR #11760:
URL: https://github.com/apache/ozone/pull/11760#discussion_r4374318998
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hadoop-ozone/common/src/main/java/org/apache/hadoop/ozone/om/protocolPB/GrpcOmTransport.java:
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@@ -208,7 +202,8 @@ private OMResponse submitRequestToLeader(OMRequest payload)
tryOtherHost = false;
Review Comment:
Nit: Let's take this opportunity to cleanup this `tryOtherHost` condition.
It's currently not used. We can also rename it to `shouldRetry`.
Also the
```java
if (!tryOtherHost) {
throw new OMException(resultCode);
}
```
is not needed since outside the loop we already throw OMException.
Additionally, `shouldRetry` actually does a failover so `shouldRetry` might
not be a good method name.
I'm OK if you defer this to a follow up ticket. The `GrpcOmTransport` is
readability is pretty poor IMO so we might need to have a wider cleanup /
refactor. To name a few
- Separate the concern for exception handling by using some kind of gRPC
StatusRuntimeException to Hadoop RemoteException adapter.
- Rename `host` to `currentHost` (or `leaderHost` if it's supposed to be
pointed to the leader).
- Separate the gRPC channel building to a separate method
- Do a compatibility test on the gRPC exception message so that it can be
parsed by the client.
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