[SOLR-15509] Issues to potentially improve JSON faceting and Stats performance with an SQL performance focus..

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Labels: RobustSQL
• Assignee: Mark Robert Miller
• Reporter: Mark Robert Miller
• Created: 29/Jun/21 14:26
• Updated: 28/Sep/21 20:27

Sub-Tasks

• Add off heap BitSet data structure option and ByteBuffer caching for reduced GC at scale.: Open
• Add FastThreadLocal type design enhancement and some buffer / object reuse for reduced gc at scale.: Open
• Add support for passing IndexSearcher an executor for multi-threaded multi-segment and possible future multi-threaded per segment search.: Open
• Review, enhance(?), sql-connect multi-threaded SimpleFaceting impl/config: Open
• Add / Compare optional experimental MMapDirectory implementation via custom ByteBuffer lib (eg Agrona, Chronicle Bytes, ...): Resolved
• Logging Performance: Patch Available
• Add a VirtualExecutor.: Open
• Optimize JavaBinCodec encode/decode performance.: Open
• Write escaped strings in SolrJSONWriter to a StringBuilder before the writer.: Patch Available
• Offer an MMapDirectoryFactory that writes with DirectIODirectory rather than FSDirectory.: Open
• Investigate if any minor tweaks can be made to improve the json output paths branch predictability.: Open
• Heavily reduce faceting ram usage for many cases.: Open
• Add SparseBitSet option for faster faceting, lower memory usage, and reduced gc at scael.: Open