Germanium Semester Tasks

[kundadebdatta]

This is a master task list of all the items identified as a part of the Germanium semester deliverables. The tasks are listed below:

List of the work-items.

• Speculative Retries #3782 Cross Region Hedging (Thompson Sampling for Speculative Retry). => @NaluTripician is currently working on this.

• Transportation Chaos Simulation - Fault Injection #3819 Transport chaos simulation. => @NaluTripician currently working on it.

• Upgrade follow-ups:

  • [Cosmos Service Upgrade - .NET] Replica Validation - Adaptive Connection Timeout Detection #4244 => @kundadebdatta and @NaluTripician to Analyze and Scope.
  • [Cosmos Service Upgrade - .NET] Replica Validation - Code Cleanup #4245 => @kundadebdatta and @NaluTripician to Analyze and Scope.

• Per Partition Automatic Failover:

  • [Internal] Researching capabilities to support PPAF for .NET, Java SDK and Compute Gateway #3499 . => @philipthomas-MSFT, @kundadebdatta to Analyzing this currency.
  • [Per Partition Automatic Failover] Validate the Current Logic of Per Partition Failover Working as Expected #3978 . => @kundadebdatta has completed this item and merged the fix.
  • [Per Partition Automatic Failover] Extend Automatic Failover For Single Master Write Requests  #3981 => @kundadebdatta has completed this item and merged the fix.
  • [Per Partition Automatic Failover] Utilize DnsClient to Read DNS TXT Records #3977 => @kundadebdatta to Analyze and Scope.
  • [Per Partition Automatic Failover] Retry on Next Preferred Region For Metadata Reads Gateway Timeouts #4181 => @kundadebdatta has completed this item and merged the fix.
  • [Per Partition Automatic Failover] Utilize CosmosClientOptions to Capture Custom Domain Names to resolve Cx Specified Endpoints  #4236 => @kundadebdatta is currently working on this.

• Supportability:

  • ClientTelemetry => Debdatta to analyze and scope. (Should be prioritized)
  • Diagnostics (any missing context) => Debdatta to analyze and scope.
  • Compaction => Backlog Item - Ways to reduce the diagnostics content.

• Reliable Writes:

  • Prioritize brute force logic. => Debdatta to Analyze and Scope.
  • Non-brute-force logic => Backlog

• Caches: Guaranteed address refreshes (decouple from CX CancellationToken's) => Nalu to Analyze and Pick Up.

• DNS -> IP handling (Caching etc.)

  • DNS outage, Compute corss-federtation routing etc. => Nalu to Experiment/ Analysis: Can we do DNS to IP mapping ourselves. (Last good known). Right now, waiting on clarifications.

Other Miscellaneous Tasks:

• Connection sharing between clients.
• Patch and Bulk in the same library.