Details

    • Type: Improvement Improvement
    • Status: Open
    • Priority: Major Major
    • Resolution: Unresolved
    • Affects Version/s: 1.0.1
    • Fix Version/s: None
    • Component/s: Database Core
    • Labels:
      None
    • Skill Level:
      Committers Level (Medium to Hard)

      Description

      Wanted to make sure this doesn't get forgotten in the planning for 1.1. Paul Davis and I independently refactored couch_query_servers. Paul's work is much more comprehensive and includes a switch to emonk:

      http://github.com/davisp/couchdb/tree/emonk

      The work I did is here

      http://github.com/kocolosk/couchdb/tree/COUCHDB-901

      One feature not included in that branch is the ability to limit the number of OS processes. Should be simple to add if my work ends up being merged. I did the refactor because I was having problems with couch_query_servers "forgetting" about OS processes in BigCouch. One of the ets tables held by couch_query_servers would list thousands of processes (and in fact there were thousands of spawned couchjs), but another table would claim that only two were running. After digging through the code a while I became frustrated with all of the tracking of multiple ets tables and rewrote a server that used only one table. Other changes include

      • ability to reuse an OS process when the client that requested it dies.
      • better behavior under config changes - doesn't kill all query servers when [query_servers] or [native_query_servers] block changes

        Activity

          People

          • Assignee:
            Unassigned
            Reporter:
            Adam Kocoloski
          • Votes:
            1 Vote for this issue
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            3 Start watching this issue

            Dates

            • Created:
              Updated:

              Development