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UID:pretalx-bbuzz22-WYC9ZB@pretalx.com
DTSTART;TZID=CET:20220613T110000
DTEND;TZID=CET:20220613T114000
DESCRIPTION:Since version 3 of Apache Lucene and Solr and from the early be
 ginning of Elasticsearch\, the general recommendation was to use MMapDirec
 tory as the implementation for index access on disk. But why is this so im
 portant?\n\nThis talk will first introduce the user about the technical de
 tails of memory mapping and why using other techniques slows down index ac
 cess by a significant amount. Of course we no longer need to talk about 32
 /64bit Java VMs - everybody uses now 64 bits with Elasticsearch and Solr\,
  but with current Java versions\, Lucene still has some 32bit-like limitat
 ions on accessing the on-disk index with memory mapping. We will discuss t
 hose limitations especially with growing index size up to terabytes\, and 
 afterwards\, Uwe will give an introduction to the new Java Foreign Memory 
 Access API (JEP 370\, JEP 383\, JEP 393\, JEP 412\, JEP 419)\, that first 
 appeared with Java 14\, but still incubating.\n\nThis talk will give an ov
 erview of the the foreign memory API to be finalized and released to gener
 al availability in Java 19 and will present the current state of implement
 ation in Lucene 10. Uwe will show how future versions of Lucene will be ba
 cked by next generation memory mapping and what needs to be done to make t
 his usable in Solr and Elasticsearch - bringing you memory mapping for ind
 exes with tens or maybe hundreds of Terabytes in the future!\n\nThe Search
  track is presented by OpenSource Connections
DTSTAMP:20260306T055634Z
LOCATION:Maschinenhaus
SUMMARY:The future of Lucene's MMapDirectory: Why use it and what's coming 
 with Java 19 and later? - Uwe Schindler
URL:https://pretalx.com/bbuzz22/talk/WYC9ZB/
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