New log effect type: log_ext that allows entries residing in segment files to be read by another process.
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log_ext that allows entries residing in segment files to be read by another process.
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… that exists in the mem table and returns an opaque "read plan" that can be executed by any process on the same node by using the `ra_log_read_plan:execute/2` function. This PR also refactors follower effect filtering to be done in the ra_server_proc only in order to keep this logic in one place. Other minor refactorings and fixes and some improvements to effect documentation.
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Introduce a new version of the
logeffect (log_ext) that allows any indexes referring to a command stored in a segment (rather than in the memtable) to be read by another process on the same node.Any indexes requested that are stored in the memtable are read by the ra server process but the remainder of entries are
provided as a "read plan" that another process could execute.
This feature is useful for offloading segment read work to RabbitMQ session/channel processes during consumption.