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Point out the correct statement.

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Point out the correct statement.

(a) Every Lucene segment now stores a unique id per-segment and per-commit to aid in accurate replication of index files

(b) The default norms format now uses sparse encoding when appropriate

(c) Tokenizers and Analyzers no longer require Reader on init

(d) All of the mentioned

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This intriguing question originated from Lucene with Hadoop topic in chapter Apache Spark, Flume, Lucene, Hama, HCatalog, Mahout, Drill, Crunch and Thrift of Hadoop

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The correct answer is (d) All of the mentioned

To explain: NormsFormat now gets its own dedicated NormsConsumer/Producer.

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