Update Service_Fabric_ReleaseNotes_91CU3.md

Add description of fixes

release_notes/Service_Fabric_ReleaseNotes_91CU3.md

@@ -1,7 +1,6 @@
 # Microsoft Azure Service Fabric 9.1 Cumulative Update 3.0 Release Notes
 
 * [Service Fabric Packages and Versions](#service-fabric-packages-and-versions)
-* [Key Announcements](#key-announcements)
 * [Service Fabric Feature and Bug Fixes](#service-fabric-feature-and-bug-fixes)
 * [Retirement and Deprecation Path Callouts](#retirement-and-deprecation-path-callouts)
 * [Repositories and Download Links](#repositories-and-download-links)
@@ -17,14 +16,18 @@ The following packages and versions are part of this release:
 |Java SDK  |Java for Linux SDK  | 1.0.6 |
 |Service Fabric PowerShell and CLI | AzureRM PowerShell Module  <br> SFCTL |  0.3.15  <br> 11.0.1 |
 
-## Key Announcements
-* Service Fabric version 9.1CU2 introduces programming model support for .NET 7.0.  Service Fabric applications running on .NET 6.0 can now be upgraded to .NET 7.0.<br>
-Note: Please install the .Net 7 runtime version greater than 7.0.2 which contains fix for binary-deserialization of float/doubles in DataContractSerializer. For details see: [Binary-deserialization of float/doubles fix](https://github.com/dotnet/runtime/pull/80321)
-* Azure Service Fabric introduced a policy which will validate that the minimum virtual machine count configuration meets the durability requirements for "Silver" and "Gold." This has been a [documented requirement](https://learn.microsoft.com/en-us/azure/service-fabric/service-fabric-cluster-capacity#durability-characteristics-of-the-cluster) to ensure reliable and safe infrastructure updates can occur for production workloads. Per this policy, Service Fabric Resource Provider node types with virtual machine scale set "Silver" or "Gold" durability tiers should always have at least 5 virtual machines. Any configuration with less than 5 virtual machines leads to various reliability issues while performing infrastructure updates (such as AutoOSUpgrades, scale out/in, platform updates, etc.) and can lead to availability or data loss. 
-Update all of your existing/new deployments to have at least 5 virtual machine instances when the virtual machine scale set durability tier is "Silver" or "Gold." We have blocked operations for new cluster creation of "Silver" and "Gold" durability tier virtual machine scale sets when the target instance count is less than 5 starting February 2023. For more updates or information on this policy and upcoming virtual machine scale set validations, refer to our [documentation](https://github.com/Azure/Service-Fabric-Troubleshooting-Guides/blob/master/Deployment/SFRP-VMSS-Validations.md).
+
 
 ## Service Fabric Feature and Bug Fixes
-This release includes quality improvements only and does not contain bug fixes to specific issue.
+| Versions | IssueType | Description | Resolution | 
+|-|-|-|-|
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**:  Auto-compaction of all KVS databases based on free page size % has been added by default and takes advantage of the new FreePageSizeThresholdInPercent setting. The default value of this setting is 30% so databases with greater than 30% free page size will be auto-compacted. At this time auto-compaction will also occur based on the legacy settings of CompactionThresholdInMB, FreePageSizeThresholdInMB, and CompactionProbabilityInPercent. Due to this databases will be compacted more frequently based on free page %<br>**Solution**: Customers should start using the new FreePageSizeThresholdInPercent property for customizing when offline auto-compaction occurs as the legacy settings will be removed in the next major Service Fabric runtime update. <br>**Workaround**: Auto-compaction based on FreePageSizeThresholdInPercent can be disabled by setting the value to 100
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**: All databases will now be regularly defragmented for accurate calculation of the free page size which is used to determine auto-compaction. Default value for DefragThresholdInMB is now changed from 500 to 0 so all databases are regularly defragmented. <br>**Solution**: Customers can adjust the frequency of defragmentation via MaxDefragFrequencyInMinutes.
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**: The IntrinsicValueThresholdInBytes setting determines the length of the "Long Value" that is stored in a record. For values bigger than the IntrinsicValueThresholdInBytes, an LVID is created and is stored in the record. Currently, this setting is set to 0 which defaults the size of a long values to 1024 bytes. This PR sets it to 5120 bytes which allows values of a size upto approximately 5KB to be stored in the record. This helps in reducing LVID creation and alleviate LVID echaustion. The number of LVIDs created should reduce and help with LVID exhaustion. <br>**Solution**: The default value of the IntrinsicValueThresholdInBytes is set to 5120 bytes <br>**Workaround**: N/A
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**: Legacy Compaction Settings (CompactionThresholdInMB, FreePageSizeThresholdInMB, and CompactionProbabilityInPercent will be removed in the next major Service Fabric runtime version and functionality will be replaced with FreePageSizeThresholdInPercent. To prepare for this eventuality, these settings are deprecated in the public API documentation and direct customers to use the new FreePageSizeThresholdInPercent setting. <br>**Solution**: Customers should start using the new FreePageSizeThresholdInPercent property for customizing when offline auto-compaction occurs. <br>**Documentation Reference**: Read more about it at - <ul><li></li><li></li><li></li></ul>
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**: Legacy Defragmentation Setting DefragThresholdInMB will be removed in the next major Service Fabric runtime version as regular defragmentation will occur by default. To prepare for this eventuality, this setting is deprecated in the public API documentation and direct customers to use MaxDefragFrequencyInMinutes. <br>**Solution**: Customers can use MaxDefragFrequencyInMinutes to adjust frequency of defragmentation going forward. <br>**Documentation Reference**: Read more about it at - <ul><li></li></ul>
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | Key Value Store (KVS) | **Brief Description**: IntrinsicValueThresholdInBytes and DatabasePageSizeInKB will be removed in the next major Service Fabric runtime version. The optimal value for these settings will be decided internally and will not be allowed to be override. <br>**Solution**: Customers will not be able to override these settings <br>**Documentation Reference**: Read more about it at - <ul><li></li></ul>
+| **Windows - 9.1.1653.9590<br>Ubuntu 18 - 9.1.1457.1<br>Ubuntu 20 - 9.1.1457.1** | **Bug** | OpenSSL | **Brief Description**: 
 
 ## Retirement and Deprecation Path Callouts
 * As aligned with [Microsoft .NET and .NET Core - Microsoft Lifecycle | Microsoft Learn](https://learn.microsoft.com/en-us/lifecycle/products/microsoft-net-and-net-core), SF Runtime has dropped support for Net Core 3.1 as of December 2022. For  supported versions see [Service Fabric supported Linux versions](https://learn.microsoft.com/en-us/azure/service-fabric/service-fabric-versions#current-versions-1) and migrate applications as needed.