HDDS-9012. Log more information about failed EC block allocation

[adoroszlai]

What changes were proposed in this pull request?

Log more information, including the exclude list, if EC block allocation fails due to max. open pipeline limit.

https://issues.apache.org/jira/browse/HDDS-9012

How was this patch tested?

CI:
https://github.com/adoroszlai/hadoop-ozone/actions/runs/5547145701

Example output from unit test:

WARN  pipeline.WritableECContainerProvider (WritableECContainerProvider.java:getContainer(170)) - Unable to allocate a container after trying 5 existing ones; requested size=1, replication=EC{rs-3-2-1024k}, owner=SCM, ExcludeList {datanodes = [], containerIds = [#2381628560543191, #2381628561553557, #2381628561265675, #2381628560940851, #2381628561836869], pipelineIds = []}
java.io.IOException: Pipeline limit (5) reached (5), none closed
	at org.apache.hadoop.hdds.scm.pipeline.WritableECContainerProvider.getContainer(WritableECContainerProvider.java:166)
	at org.apache.hadoop.hdds.scm.pipeline.WritableECContainerProvider.getContainer(WritableECContainerProvider.java:51)

WARN  pipeline.WritableECContainerProvider (WritableECContainerProvider.java:getContainer(105)) - Unable to allocate a container with 0 existing ones; requested size=1, replication=EC{rs-3-2-1024k}, owner=SCM, ExcludeList {datanodes = [], containerIds = [], pipelineIds = []}
java.io.IOException: Cannot create pipelines
	at org.apache.hadoop.hdds.scm.pipeline.TestWritableECContainerProvider$2.createPipeline(TestWritableECContainerProvider.java:315)
	at org.apache.hadoop.hdds.scm.pipeline.MockPipelineManager.createPipeline(MockPipelineManager.java:65)
	at org.apache.hadoop.hdds.scm.pipeline.TestWritableECContainerProvider$2.createPipeline(TestWritableECContainerProvider.java:318)
	at org.apache.hadoop.hdds.scm.pipeline.WritableECContainerProvider.allocateContainer(WritableECContainerProvider.java:196)
	at org.apache.hadoop.hdds.scm.pipeline.WritableECContainerProvider.getContainer(WritableECContainerProvider.java:103)
	at org.apache.hadoop.hdds.scm.pipeline.WritableECContainerProvider.getContainer(WritableECContainerProvider.java:51)

[guohao-rosicky]

Thanks @adoroszlai work on this. The change look good and it helps us to localize the problem.

[sadanand48]

Thanks @adoroszlai for the change, LGTM

[adoroszlai]

Thanks @guohao-rosicky, @sadanand48 for the review.