Got it, thanks. On Mon, Jan 14, 2019 at 6:01 AM Michael McCandless < [email protected]> wrote:
> Hi John, > > 1. When the total size across all in memory segments crosses 100 MB, then > IW will pick the largest segment(s) to move to disk > 2. There are in memory segments; when an indexing thread comes in, it will > write to one segment and no other thread can write to that segment while > that thread is indexing the one document. We used to have some thread > affinity so a given thread would prefer to write to the same in-memory > segment but I think we don't do that anymore. If an indexing thread > arrives to index a doc, but all in memory segments are already handling > other documents, then we will create a new in-memory segment for that > thread to write to. > 3. Should be .del files > > Mike McCandless > > http://blog.mikemccandless.com > > > On Mon, Jan 7, 2019 at 7:08 PM John Wilson <[email protected]> > wrote: > >> Hi, >> >> >> 1. Assume I have two index writer threads using an IndexWriter object >> (IndexWriter is thread safe) and my ramBufferSizeMB is set to 100M, then >> are segments created when each thread writes 100M or when the total size >> written in the buffers is 100M? >> 2. Does each index writer thread writes its own segment or the two >> writers can write to the same segment (requiring synchronization)? >> 3. When a document is deleted/updated, the document is marked and >> this info is stored in a separate file so that the next merge deletes the >> document. What would be a typical name (or extension) of the file in my >> index directory? >> >> Thanks, >> John >> >
