Slava Tutrinov

@guohao-rosicky sure, take a look at TestSsdAndRemainingVolumesFallbackChoosingPolicy.testFallbackWayOfSsdStorageVolumePolicy

@xichen01 is there an understanding of the time frame for the functionality to be implemented? I'd start creating the JIRA tickets and implementing them

@xichen01 @kerneltime @sodonnel, could you help somehow to force the review of the design doc? The feature is very needed, and I would gladly start implementation.

@ivandika3 thanks for the response! Can we glance at the implementation as the first phase (maybe in a custom feature branch)? Or are there too many private details?

@ivandika3 it would be great!

@ivandika3 I don't want to rush, but is there any news about the mentioned diff?

@ivandika3 @xichen01 the diff above has references to the following non-existent files (relative to ozone-1.4.1): ``` hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/SCMContainerPlacementDataCenterAware.java hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/SCMContainerPlacementDataRecovery.java hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/pipeline/PipelinePlacementDataCenterAware.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementDataCenterAware.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementDataCenterAwareSpecialCase.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementDataRecovery.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementDcFlow.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/pipeline/TestPipelinePlacementDataCenterAware.java hadoop-hdds/container-service/src/test/java/org/apache/hadoop/ozone/container/diskbalancer/TestDiskBalancerService.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementStorageTier.java hadoop-hdds/common/src/main/java/org/apache/hadoop/hdds/client/StorageTierUtil.java hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/NodeUtils.java hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/TestSpecialCloseContainerEventHandler.java hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/hdds/scm/container/TestPeriodicContainerCloser.java...

Design doc and an initial implementation are in progress