hemantk-12 commented on code in PR #8157:
URL: https://github.com/apache/ozone/pull/8157#discussion_r2012627385
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hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/snapshot/OMSnapshotCreateRequest.java:
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@@ -165,6 +165,14 @@ public OMClientResponse
validateAndUpdateCache(OzoneManager ozoneManager, Execut
throw new OMException("Snapshot already exists", FILE_ALREADY_EXISTS);
}
+ // Check snapshot limit
+ int maxSnapshots = ozoneManager.getFsSnapshotMaxLimit();
+ if (omMetrics.getNumSnapshotActive() >= maxSnapshots) {
Review Comment:
1. We can't rely on this metric. If a bootstrapped node becomes the leader,
it may not have the correct active snapshot count. We should use
SnapshotInfoTable size.
2. Should we compare it against total snapshots? I'm thinking that if there
is an issue in the SnapshotDeletionService, we may accumulate a lot of
snapshots without knowing that there is a problem in the snapshot purge unless
someone has good dashboard and alarms in place.
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