Thomas Mueller

Possible performance improvement by replacing % (modulo) with multiply + shift

3

This is described in http://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/ (I'm looking for a fast Bloom filter implementation, and found your implementation uses modulo which is a bit slow.)

OAK-9893 Prefetch for queries

2

Details are in https://issues.apache.org/jira/browse/OAK-9893

(This is the PR https://github.com/apache/jackrabbit-oak/pull/587 but merged into a branch of Oak) Since indexing was single threads, which is slow for large repository. In order to improve the indexing performance...

Sieve2: a sieve that remembers

12

(Maybe you remember me, I helped a bit with the LIRS cache and the Bloom filter in the past). I have seen the new "Sieve" cache algorithm and played a...

ACTool-Config-Worker may throw an exception because it executes very expensive queries, preventing startup

4

The following two queries are executed at startup (thread name "Apache Sling Repository Startup Thread #1-ACTool-Config-Worker"). Depending on the content, they may try to read more than 100'000 nodes, which...