Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-47672

Add minSnapshotHistoryWindowInSeconds parameter

XMLWordPrintableJSON

    • Type: Icon: New Feature New Feature
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 4.7.0
    • Affects Version/s: None
    • Component/s: Replication
    • None
    • Fully Compatible
    • Repl 2020-05-18

      Add a new startup and runtime server parameter minSnapshotHistoryWindowInSeconds for mongod, which is the amount of history in seconds stored by the system. Remove support for maxTargetSnapshotHistoryWindowInSeconds.

      Also remove snapshot window adjustment logic, see SERVER-31767.

      • This logic was used to dynamically change the amount of history stored to avoid cache pressure. Given durable history is available now, this is no longer needed.
      • Delete metrics in the "snapshot-window-settings" subsection of the wiredTiger serverStatus section that are no longer relevant.
        • "max target available snapshots window size in seconds”
        • "target available snapshots window size in seconds"

      Add metric "minimum target snapshots window size in seconds".

            Assignee:
            lingzhi.deng@mongodb.com Lingzhi Deng
            Reporter:
            jesse@mongodb.com A. Jesse Jiryu Davis
            Votes:
            0 Vote for this issue
            Watchers:
            4 Start watching this issue

              Created:
              Updated:
              Resolved: