The priority index documents file can be trivially compressed to a large degree.
Compression schema:
```
00b -> diff docord (E gamma)
01b -> diff domainid (E delta) + (1 + docord) (E delta)
10b -> rank (E gamma) + domainid,docord (raw)
11b -> 30 bit size header, followed by 1 raw doc id (61 bits)
```
The implementation was incorrectly using 1 bit more than it should. The change also adds a put method for Elias delta; and cleans up the interface a bit.
Previously this was the responsibility of the caller, which lead to the possibility of passing in improperly prepared buffers and receiving bad outcome
Btree index adds overhead and disk space and doesn't fill any function for the prio index.
* Update finalize logic with a new IO transformer that copies the data and prepends a size
* Update the reader to read the new format
* Added a test
Cache the Charset object returned from Charset.forName() for future use, since we're likely to see the same charset again and Charset.forName(...) can be surprisingly expensive and its built-in caching strategy, which just caches the 2 last values seen doesn't cope well with how we're hitting it with a wide array of random charsets
The term data iterator is quite hot and was performing buffer slice operations that were not necessary.
Replacing with a fixed pointer alias that can be repositioned to the relevant data.
The positions data was also being wrapped in a GammaCodedSequence only to be immediately un-wrapped.
Removed this unnecessary step and move to copying the buffer directly instead.
After real-world testing, it was determined that 256 was still a bit too low, but 512 seems like it will only truncate outlier cases like assembly code and certain tabulations.
The change adds a new system property 'system.profile' that makes ProcessService automatically trigger JFR profiling of the processes it spawns. By default, these are put in the log directory.
The change also adds a JVM parameter that makes it shut up about native access.
This commit introduces a readme.md file to document the functionality and usage of the coded-sequence library. It covers the Elias Gamma code support, how sequences are encoded, and methods the library offers to query sequences, iterate over values, access data, and decode sequences.
This is not hooked in yet, and the term metadata is still left intact. It should probably shrink to a smaller representation (byte?) with the upcoming removal of the position mask.
