Status

Current state: Discussion

Discussion Thread: here

JIRA: Unable to render Jira issues macro, execution error.

Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

Motivation

KIP-770 introduced a new config called input.buffer.max.bytes and also a corresponding task level metric. While implementing the KIP, it was noticed that a similar metric to track the cache size in bytes at a task level is missing and would be a good addition. This KIP aims to introduce the same.

Proposed Changes

Add a new metric called cache-size-bytes-total. This would be a task level metric to track the cache size in bytes accumulated by this task.

Public Interfaces

  • Adding new metric called cache-size-bytes-total .
    • type = stream-task-metrics
    • thread-id = [thread ID]
    • task-id = [task ID]

    • The recording level for all metrics will be DEBUG

    • Description: The cache size in bytes accumulated by this task.

Compatibility, Deprecation, and Migration Plan

  • None. Since this is a net new metric.

Rejected Alternatives

  • None


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