Point out the wrong statement.
(a) ConcurScheduler detects whether the index is on SSD or not
(b) Memory index supports payloads
(c) Auto-IO-throttling has been added to ConcurrentMergeScheduler, to rate limit IO writes for each merge depending on incoming merge rate
(d) The default codec has an option to control BEST_SPEED or BEST_COMPRESSION for stored fields
(a) ConcurScheduler detects whether the index is on SSD or not
(b) Memory index supports payloads
(c) Auto-IO-throttling has been added to ConcurrentMergeScheduler, to rate limit IO writes for each merge depending on incoming merge rate
(d) The default codec has an option to control BEST_SPEED or BEST_COMPRESSION for stored fields
Right choice is (a) ConcurScheduler detects whether the index is on SSD or not
To explain: ConcurrentMergeScheduler does a better job defaulting its settings.