<p>
The number of map elements is called its length.
For a map <code>m</code>, it can be discovered using the
built-in function <a href="#Length_and_capacity"><code>len</code></a>
and may change during execution. Elements may be added during execution
using <a href="#Assignment_statements">assignments</a> and retrieved with
<a href="#Index_expressions">index expressions</a>; they may be removed with the

### Cluster Lifecycle

    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.
    * Fix detect exceptions plugin to analyze message field instead of log field.
    * Fix detect exceptions plugin to analyze streams based on local resource id.
    * Disable the metadata agent for monitored resource construction in logging.

### Cluster Lifecycle

- Fix error handling and potential go null pointer exception in kubeadm upgrade diff ([#80648](https://github.com/kubernetes/kubernetes/pull/80648), [@odinuge](https://github.com/odinuge))

    *   Kubelet can now provide full summary api support for the CRI container runtime, with the exception of container log stats. ([#55810](https://github.com/kubernetes/kubernetes/pull/55810), [@abhi](https://github.com/abhi))

    - `apiserver_flowcontrol_nominal_limit_seats`: Nominal number of execution seats configured for each priority level
    - `apiserver_flowcontrol_lower_limit_seats`: Configured lower bound on number of execution seats available to each priority level
    - `apiserver_flowcontrol_upper_limit_seats`: Configured upper bound on number of execution seats available to each priority level

    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.
    * Fix detect exceptions plugin to analyze message field instead of log field.
    * Fix detect exceptions plugin to analyze streams based on local resource id.
    * Disable the metadata agent for monitored resource construction in logging.

    * Logging Agent Improvements
    * Bump logging agent version to 0.2-1.5.33-1-k8s-1.
    * Appropriately set log severity for k8s_container.
    * Fix detect exceptions plugin to analyze message field instead of log field.
    * Fix detect exceptions plugin to analyze streams based on local resource id.
    * Disable the metadata agent for monitored resource construction in logging.

* fluentd config for GKE clusters updated: detect exceptions in container log streams and forward them as one log entry. ([#39656](https://github.com/kubernetes/kubernetes/pull/39656), [@thomasschickinger](https://github.com/thomasschickinger))

- The scheduler's metric `plugin_execution_duration_seconds` now records `PreEnqueue` plugins execution seconds. ([#116201](https://github.com/kubernetes/kubernetes/pull/116201), [@sanposhiho](https://github.com/sanposhiho))