____________ can be used to generate stats over the results of arbitrary numeric functions.

____________ can be used to generate stats over the results of arbitrary numeric functions.
stats.field
Well Done. Your Answer is Correct Keep it Up! Explanation: stats.field allows for requesting for statistics for pivot facets using tags.
sta.field
stats.value
stat.value

SolrJ now has first class support for __________ API.

SolrJ now has first class support for __________ API.
Collection
Well Done. Your Answer is Correct Keep it Up! Explanation: Solr is the popular, blazing-fast, open source enterprise search platform built on Apache Lucene.
Compactions
Distribution
All Options are Correct

PostingsFormat now uses a __________ API when writing postings, just like doc values.

PostingsFormat now uses a __________ API when writing postings, just like doc values.
pull
Well Done. Your Answer is Correct Keep it Up! Explanation: This is powerful because you can do things in your postings format that require making more than one pass through the postings such as iterating over all postings.
push
write
read

Heap usage during IndexWriter merging is also much lower with the new _________

Heap usage during IndexWriter merging is also much lower with the new _________
Lucene50Codec
Well Done. Your Answer is Correct Keep it Up! Explanation: Doc values and norms for the segments being merged are no longer fully loaded into heap for all fields
LucCodec
Lucene20Cod
All Options are Correct

All file access uses Java’s __________ APIs which give Lucene stronger index safety.

All file access uses Java’s __________ APIs which give Lucene stronger index safety.
NIO.2
Well Done. Your Answer is Correct Keep it Up! Explanation: Index safety is provided in terms of better error handling and safer commits.
NIO.1
NIO.3
NIO.4

Lucene index size is roughly _______ the size of text indexed.

Lucene index size is roughly _______ the size of text indexed.
0.2
Well Done. Your Answer is Correct Keep it Up! Explanation: Lucene provides incremental indexing as fast as batch indexing.
0.15
0.1
0.25

Lucene provides scalable, high-Performance indexing over ______ per hour on modern hardware.

Lucene provides scalable, high-Performance indexing over ______ per hour on modern hardware.
150GB
Well Done. Your Answer is Correct Keep it Up! Explanation: Lucene offers powerful features through a simple API.
1GB
1TB
150TB

____________ is a subproject with the aim of collecting and distributing free materials.

____________ is a subproject with the aim of collecting and distributing free materials.
ORP
Well Done. Your Answer is Correct Keep it Up! Explanation: Open Relevance Project is used for relevance testing and performance.
OPR
OCR
ORC

Point out the correct statement.

Point out the correct statement.
All Options are Correct
Well Done. Your Answer is Correct Keep it Up! Explanation: PyLucene requires Python version 2.x (x >= 3.5) and Java version 1.x (x &t;= 5).
Building PyLucene requires GNU Make, a recent version of Ant capable of building Java Lucene and a C++ compiler
PyLucene is supported on Mac OS X, Linux, Solaris and Windows
Use of setuptools is recommended for Lucene

___________ provides Java-based indexing and search technology.

___________ provides Java-based indexing and search technology.
Lucene Core
Well Done. Your Answer is Correct Keep it Up! Explanation: Lucene provides spellchecking, hit highlighting and advanced analysis/tokenization capabilities.
solar
Lucene
None of the Option is Correct