/**
* Remove the sentinels that are marked as finished and the completion time has exceeded the
* removal timeout.
*
* @param sentinels map of sentinels to clean
*/
private synchronized void cleanupSentinels(final Map<TableName, SnapshotSentinel> sentinels) {
long currentTime = EnvironmentEdgeManager.currentTime();
Iterator<Map.Entry<TableName, SnapshotSentinel>> it = sentinels.entrySet().iterator();
while (it.hasNext()) {
Map.Entry<TableName, SnapshotSentinel> entry = it.next();
SnapshotSentinel sentinel = entry.getValue();
if (sentinel.isFinished()
&& (currentTime - sentinel.getCompletionTimestamp())
> SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT) {
it.remove();
}
}
}
