* Enables clearing the index
Closes#510
* Adds an examples to clear and rebuild index
* Addressing code review
Moved the example from examples/ to docstring above `clear`
* Corrected minor typos and missed/duplicate words
* Added stamper.revert method to be used for rollback
Added type alias for Opstamp
Moved to AtomicU64 on stable rust (since 1.34)
* Change the method name and doc-string
* Remove rollback from delete_all_documents
test_add_then_delete_all_documents fails with --test-threads 2
* Passes all the tests with any number of test-threads
(ran locally 5 times)
* Addressed code review
Deleted comments with debug info
changed ReloadPolicy to Manual
* Removing useless garbage_collect call and updated CHANGELOG
* Split Collector into an overall Collector and a per-segment SegmentCollector. Precursor to cross-segment parallelism, and as a side benefit cleans up any per-segment fields from being Option<T> to just T.
* Attempt to add MultiCollector back
* working. Chained collector is broken though
* Fix chained collector
* Fix test
* Make Weight Send+Sync for parallelization purposes
* Expose parameters of RangeQuery for external usage
* Removed &mut self
* fixing tests
* Restored TestCollectors
* blop
* multicollector working
* chained collector working
* test broken
* fixing unit test
* blop
* blop
* Blop
* simplifying APi
* blop
* better syntax
* Simplifying top_collector
* refactoring
* blop
* Sync with master
* Added multithread search
* Collector refactoring
* Schema::builder
* CR and rustdoc
* CR comments
* blop
* Added an executor
* Sorted the segment readers in the searcher
* Update searcher.rs
* Fixed unit testst
* changed the place where we have the sort-segment-by-count heuristic
* using crossbeam::channel
* inlining
* Comments about panics propagating
* Added unit test for executor panicking
* Readded default
* Removed Default impl
* Added unit test for executor
* Compute space usage of a Searcher / SegmentReader / CompositeFile
* Fix typo
* Add serde Serialize/Deserialize for all the SpaceUsage structs
* Fix indexing
* Public methods for consuming space usage information
* #281: Add a space usage method that takes a SegmentComponent to support code that is unaware of particular segment components, and to make it more likely to update methods when a new component type is added.
* Add support for space usage computation of positions skip index file (#281)
* Add some tests for space usage computation (#281)
* Add skip information for posting list (skip to doc ids)
* Separate num bits from data for positions (skip n positions)
* Address in the position using a n-position offset
* Added a long skip structure to allow efficient opening of the position for a given term.
* Add non-deleted DocId iterator to SegmentReader
Closes#287
* Add Todo
* Add Unit Test
* Improving test based on feedback
- found bug and fixed it. :)
* Reestablish changes post rebase for clean merge
* Add fast field for associating arbitrary bytes to a document
* Fix unused macro_use warning
* Improvements from code review
* Make BytesFastFieldWriter public
* Fix json parsing validation failure
* Add bytes fast field to CHANGELOG.md
* Fix compile errors from merge
* Support merging
* Address misc code review comments
* Fix comments from CR
