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StorageGRID CloudMirror Replication Delays and Checkpoint Inconsistency

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Applies to

  • NetApp StorageGRID 11.9
  • Platform Services – CloudMirror Replication
  • Multi-site StorageGRID deployments with cross-site replication

Issue

Customers observed the following symptoms after expanding their StorageGRID environment and enabling cross-site CloudMirror replication:

  • Significant delays in S3 object ingest operations.

  • High number of pending and in-progress platform service replication requests.

  • Surges in S3 request duration and large active request queues (up to 1,500+).

  • Target tables in destination buckets became inaccessible due to checkpoint mismatches:

    The_last_checkpoint (xxx000) is ahead of the latest checkpoint.parquet (xxxx30) in the target delta_log. This is causing the target table to be inaccessible with the error: LastCheckpoint(xxx000...) mentions a non-existent checkpoint file.

  • StorageGRID logs showed repeated errors such as:
    WARNING: [endpoint.go:zzz] RequestError: send request failedcaused by: Put "https://<endpoint>": unexpected EOF

  • Disabling CloudMirror replication stabilized client performance, but pending queues drained very slowly (e.g., ~50 objects per 20 minutes).

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