GauthamBanasandra commented on PR #4245:
URL: https://github.com/apache/hadoop/pull/4245#issuecomment-1113997221

   Hi @steveloughran,
   
   > this going to cause any linkage problems with existing apps?
   
   No. The type `uint32_t` is part of the C++ standard included in the 
`cstdint` header file. It shouldn't cause any issues.
   
   > what's up with the shaded client failure? its probably completely 
unrelated, but I've not seen this before.
   
   Yeah. It seems like we've a regression. I was able to reproduce this on the 
trunk on Debian 10. I'm trying to do a `git bisect` to narrow down the commit 
that's causing this.
   Here's the test failure -
   
   ```
   [INFO] Running org.apache.hadoop.example.ITUseMiniCluster
   [ERROR] Tests run: 2, Failures: 0, Errors: 2, Skipped: 0, Time elapsed: 
18.47 s <<< FAILURE! - in org.apache.hadoop.example.ITUseMiniCluster
   [ERROR] useWebHDFS(org.apache.hadoop.example.ITUseMiniCluster)  Time 
elapsed: 12.167 s  <<< ERROR!
   org.apache.hadoop.yarn.exceptions.YarnRuntimeException: 
org.apache.hadoop.yarn.webapp.WebAppException: Error starting http server
        at 
org.apache.hadoop.yarn.server.MiniYARNCluster.startResourceManager(MiniYARNCluster.java:384)
        at 
org.apache.hadoop.yarn.server.MiniYARNCluster.access$300(MiniYARNCluster.java:129)
        at 
org.apache.hadoop.yarn.server.MiniYARNCluster$ResourceManagerWrapper.serviceStart(MiniYARNCluster.java:500)
        at 
org.apache.hadoop.service.AbstractService.start(AbstractService.java:195)
        at 
org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:123)
        at 
org.apache.hadoop.yarn.server.MiniYARNCluster.serviceStart(MiniYARNCluster.java:333)
        at 
org.apache.hadoop.service.AbstractService.start(AbstractService.java:195)
        at 
org.apache.hadoop.example.ITUseMiniCluster.clusterUp(ITUseMiniCluster.java:84)
        at 
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   ```


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