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

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