Fixes to review comments, removed output references and corrected bucket variable description. Applys to #2124.

Signed-off-by: Eric D. Schabell <eric@schabell.org>

Author: eschabell

pipeline/filters/log_to_metrics.md

@@ -23,8 +23,8 @@ The plugin supports the following configuration parameters:
 | Key                     | Description                                                                                                                                                                                                                                                                                                                                                                                       | Default      | Format                                                                                                                                                  |
 |-------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
 | `add_label`             | Adds a custom label `NAME` and set the value to the value of `KEY`.                                                                                                                                                                                                                                                                                                                               | _none_       | `NAME KEY`                                                                                                                                              |
-| `alias`                 | Sets an alias, useful for multiple instances of the same output plugin.                                                                                                                                                                                                                                                                                                                           | _none_       |                                                                                                                                                         |
-| `bucket`                | Required for mode `histogram`. Defines a bucket for histograms.                                                                                                                                                                                                                                                                                                                                   | _none_       | For example, `0.75`                                                                                                                                     |
+| `alias`                 | Sets an alias, useful for multiple instances of the same filter plugin.                                                                                                                                                                                                                                                                                                                           | _none_       |                                                                                                                                                         |
+| `bucket`                | Optional for `metric_mode` `histogram`. If not set, default Prometheus-style buckets are used.                                                                                                                                                                                                                                                                                                    | _none_       | For example, `0.75`                                                                                                                                     |
 | `discard_logs`          | Flag that defines if logs should be discarded after processing. This applies for all logs, no matter if they have emitted metrics or not.                                                                                                                                                                                                                                                         | `false`      |                                                                                                                                                         |
 | `emitter_name`          | Name of the emitter (advanced users).                                                                                                                                                                                                                                                                                                                                                             | _none_       |                                                                                                                                                         |
 | `emitter_mem_buf_limit` | set a buffer limit to restrict memory usage of metrics emitter.                                                                                                                                                                                                                                                                                                                                   | `10M`        |                                                                                                                                                         |
@@ -33,10 +33,10 @@ The plugin supports the following configuration parameters:
 | `flush_interval_nsec`   | The interval for metrics emission, in nanoseconds. This parameter works in conjunction with `flush_interval_sec`.                                                                                                                                                                                                                                                                                 | `0`          |                                                                                                                                                         |
 | `kubernetes_mode`       | If enabled, adds `pod_id`, `pod_name`, `namespace_name`, `docker_id` and `container_name` to the metric as labels. This option is intended to be used in combination with the [Kubernetes](./kubernetes.md) filter plugin, which fills those fields.                                                                                                                                              | `false`      |                                                                                                                                                         |
 | `label_field`           | Includes a record field as label dimension in the metric.                                                                                                                                                                                                                                                                                                                                         | _none_       | Name of record key. Supports [record accessor](../../administration/configuring-fluent-bit/classic-mode/record-accessor.md) notation for nested fields. |                                                                                                                                                   
-| `log_level`             | Specifies the log level for output plugin. If not set here, plugin uses global log level in `service` section.                                                                                                                                                                                                                                                                                    | `info`       |                                                                                                                                                         |
-| `log_supress_interval`  | Suppresses log messages from output plugin that appear similar within a specified time interval. `0` no suppression.                                                                                                                                                                                                                                                                              | `0`          |                                                                                                                                                         |
-| `match`                 | Set a tag pattern to match records that output should process. Exact matches or wildcards.                                                                                                                                                                                                                                                                                                        | _none_       |                                                                                                                                                         |
-| `match_regex`           | Set a regular expression to match tags for output routing. This allows more flexible matching compared to simple wildcards.                                                                                                                                                                                                                                                                       | _none_       |                                                                                                                                                         |
+| `log_level`             | Specifies the log level for filter plugin. If not set here, plugin uses global log level in `service` section.                                                                                                                                                                                                                                                                                    | `info`       |                                                                                                                                                         |
+| `log_supress_interval`  | Suppresses log messages from filter plugin that appear similar within a specified time interval. `0` no suppression.                                                                                                                                                                                                                                                                              | `0`          |                                                                                                                                                         |
+| `match`                 | Set a tag pattern to match records that filter should process. Exact matches or wildcards.                                                                                                                                                                                                                                                                                                        | _none_       |                                                                                                                                                         |
+| `match_regex`           | Set a regular expression to match tags for filter routing. This allows more flexible matching compared to simple wildcards.                                                                                                                                                                                                                                                                       | _none_       |                                                                                                                                                         |
 | `metric_description`    | Sets a description for the metric.                                                                                                                                                                                                                                                                                                                                                                | _none_       |                                                                                                                                                         |
 | `metric_mode`           | Defines the mode for the metric. Valid values are `counter`, `gauge` or `histogram`.                                                                                                                                                                                                                                                                                                              | `counter`    |                                                                                                                                                         |
 | `metric_name`           | Sets the name of the metric.                                                                                                                                                                                                                                                                                                                                                                      | `a`          |                                                                                                                                                         |