Question

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

This question was posed to me during an interview.

My doubt is from Lucene with Hadoop topic in division Apache Spark, Flume, Lucene, Hama, HCatalog, Mahout, Drill, Crunch and Thrift of Hadoop

Answer 1

Right choice is (a) ConcurScheduler detects whether the index is on SSD or not

To explain: ConcurrentMergeScheduler does a better job defaulting its settings.