Add metrics issues to known-issues. (#4085)

Author: kislaykishore

docs/known-issues.md

@@ -14,7 +14,10 @@ This document lists known issues and bugs in GCSFuse, their impact, and the rele
 
 ## Resolved Issues
 
-| Issue                                                                                                      | Affected Versions                                                                                                                                                                                                                                                                                                                                                                  | Fixed in | Reference |
-|:-----------------------------------------------------------------------------------------------------------|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| :--- | :--- |
-| Input/output error when metrics are enabled.                                                               | Applications may receive input/output errors from GCSFuse mounts when metrics are enabled.                                                                                                                                                                                                                                                                                         | v2.12.0 | [#3870](https://github.com/GoogleCloudPlatform/gcsfuse/issues/3870) |
-| Writing to a file fails with an Input/Output error on the application side, accompanied by 503 errors in the GCSFuse logs. This occurs when streaming writes are enabled. | This issue was caused by stalls during write operations. It has been resolved in GCSFuse v3.3.0. Users should upgrade to v3.3.0 or later. **Workaround:** Disable streaming writes (`--enable-streaming-writes=false`) only if user can't upgrade. This flag reliably prevents the error only when staging writes uses fast media type like, SSD, tmpfs (specified using`--temp-dir`). |v3.3.0||
+| Issue                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | Affected Versions   | Fixed in | Reference                                                           |
+|:-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:--------------------|:---------|:--------------------------------------------------------------------|
+| Writing to a file fails with an Input/Output error on the application side, accompanied by 503 errors in the GCSFuse logs. This occurs when streaming writes are enabled. This issue was caused by stalls during write operations. It has been resolved in GCSFuse v3.3.0. Users should upgrade to v3.3.0 or later. **Workaround:** Disable streaming writes (`--enable-streaming-writes=false`) only if user can't upgrade. This flag reliably prevents the error only when staging writes uses fast media type like, SSD, tmpfs (specified using`--temp-dir`). | \[v3.0.* - v3.2.*\] | v3.3.0   ||
+| Metrics: Input/output error when metrics are enabled. Applications may receive input/output errors from GCSFuse mounts when metrics are enabled.                                                                                                                                                                                                                                                                                                                                                                                                                 | v2.11.*             | v2.12.0  | [#3870](https://github.com/GoogleCloudPlatform/gcsfuse/issues/3870) |
+| Metrics: Incorrect gcs/reader_count and gcs/download_bytes_count metrics.                                                                                                                                                                                                                                                                                                                                                                                                                            | \[v2.5.0, v3.4.*]   | v3.5.1   | [#3895](https://github.com/GoogleCloudPlatform/gcsfuse/pull/3895)
+| Metrics: Points must be written in order. One or more of the points specified had an older start time than the most recent point. Happens when multiple GCSFuse mounts are present on the same machine. | \[v2.5.0, v3.4.*\]  | v3.5.1   | [#3895](https://github.com/GoogleCloudPlatform/gcsfuse/pull/3923)|
+| Metrics: One or more points were written more frequently than the maximum sampling period configured for the metric. Happens when multiple GCSFuse mounts are present on the same machine. | \[v2.5.0, v3.4.*\]  | v3.5.1   | [#3895](https://github.com/GoogleCloudPlatform/gcsfuse/pull/3923)|