HDDS-6217. Cleanup XceiverClientGrpc TODOs, and document how the client works and should be used. #3012
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…nt works and should be used.
fapifta
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adoroszlai
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Jul 1, 2022
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Thanks @fapifta for the cleanup and writeup. |
errose28
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Jul 12, 2022
* master: (46 commits) HDDS-6901. Configure HDDS volume reserved as percentage of the volume space. (apache#3532) HDDS-6978. EC: Cleanup RECOVERING container on DN restarts (apache#3585) HDDS-6982. EC: Attempt to cleanup the RECOVERING container when reconstruction failed at coordinator. (apache#3583) HDDS-6968. Addendum: [Multi-Tenant] Fix USER_MISMATCH error even on correct user. (apache#3578) HDDS-6794. EC: Analyze and add putBlock even on non writing node in the case of partial single stripe. (apache#3514) HDDS-6900. Propagate TimeoutException for all SCM HA Ratis calls. (apache#3564) HDDS-6938. handle NPE when removing prefixAcl (apache#3568) HDDS-6960. EC: Implement the Over-replication Handler (apache#3572) HDDS-6979. Remove unused plexus dependency declaration (apache#3579) HDDS-6957. EC: ReplicationManager - priortise under replicated containers (apache#3574) HDDS-6723. Close Rocks objects properly in OzoneManager (apache#3400) HDDS-6942. Ozone Buckets/Objects created via S3 should not allow group access (apache#3553) HDDS-6965. Increase timeout for basic check (apache#3563) HDDS-6969. Add link to compose directory in smoketest README (apache#3567) HDDS-6970. EC: Ensure DatanodeAdminMonitor can handle EC containers during decommission (apache#3573) HDDS-6977. EC: Remove references to ContainerReplicaPendingOps in TestECContainerReplicaCount (apache#3575) HDDS-6217. Cleanup XceiverClientGrpc TODOs, and document how the client works and should be used. (apache#3012) HDDS-6773. Cleanup TestRDBTableStore (apache#3434) - fix checkstyle HDDS-6773. Cleanup TestRDBTableStore (apache#3434) HDDS-6676. KeyValueContainerData#getProtoBufMessage() should set block count (apache#3371) ... Conflicts: hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/server/upgrade/SCMUpgradeFinalizer.java
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What changes were proposed in this pull request?
As part of HDDS-5954, we have investigated the gRPC client and how it works, to see how we should tune its behaviour for erasure coded storage. At the end of the day, we decided to do not change the gRPC client and how it works in general, but we would like to document what we have found, and considered.
This PR contains our learnt knowledge, it removes the TODO comments from the XceiverClientGrpc class, and extends the APIDoc related to this class as well as adds a broader readme content about how the client works with the rest of the code.
Code changes to fix some IDE warnings along with documentation changes are:
What is the link to the Apache JIRA
https://issues.apache.org/jira/browse/HDDS-6217
How was this patch tested?
Not applicable, there weren't any semantical changes made to the code.