// compacted until the limit is reached.
//
// This ensures that any branch will never contain an unreasonable amount of other branches,
// and also that small branches with few objects don't take up unreasonable amounts of space.
// This keeps the cache size at a reasonable size for all buckets.
//
// Whenever a branch is scanned, it is assumed that it will be un-compacted
// before it hits any of the above limits.

			agreed: func(entry metaCacheEntry) {
				jt.Take()
				go healEntry(bucket, entry)
			},
			partial: func(entries metaCacheEntries, _ []error) {
				entry, ok := entries.resolve(&resolver)
				if !ok {
					// check if we can get one entry at least
					// proceed to heal nonetheless.
					entry, _ = entries.firstFound()
				}
				jt.Take()
				go healEntry(bucket, *entry)
			},
			finished: nil,

		// Leader node (that successfully acquires the lock inside runCallhome)
		// will keep performing the callhome. If the leader goes down for some reason,
		// the lock will be released and another node will acquire it and take over
		// because of this loop.
		for {
			if !globalCallhomeConfig.Enabled() {
				return
			}

			if !runCallhome(ctx, objAPI) {
				// callhome was disabled or context was canceled
				return
			}

		t.Fatalf("unexpected error: %v", err)
	}
	if err := ps.Subscribe(MaskAll, ch2, doneCh2, nil); err != nil {
		t.Fatalf("unexpected error: %v", err)
	}

	close(doneCh1)
	// Allow for the above statement to take effect.
	time.Sleep(100 * time.Millisecond)
	ps.Lock()
	if len(ps.subs) != 1 {
		t.Fatal("expected 1 subscriber")
	}
	ps.Unlock()
	close(doneCh2)
}

type maskString string

	err = obj.MakeBucket(context.Background(), "unused-bucket", MakeBucketOptions{})
	if err != nil {
		// Failed to create newbucket, abort.
		t.Fatalf("%s : %s", instanceType, err.Error())
	}

	// Take 4 disks down, one more we loose quorum on 16 disk node.
	for _, disk := range disks[:4] {
		os.RemoveAll(disk)
	}

	testCases := []struct {
		bucketName    string
		objName       string

		maxMemoryBytes := 2 * int64(10<<20)
		maxMemoryBytes -= int64(len(name))
		maxMemoryBytes -= mapEntryOverhead
		if maxMemoryBytes < 0 {
			// We can't actually take this path, since nextPart would already have
			// rejected the MIME headers for being too large. Check anyway.
			apiErr := errorCodes.ToAPIErr(ErrMalformedPOSTRequest)