1. 16 Oct, 2018 1 commit
    • Yossi Gottlieb's avatar
      Fix a memory leak with log_clear. · 4aeeb548
      Yossi Gottlieb authored
      This is probably most common when loading a snapshot.  Currently it is
      only possibly to free allocated entry memory on log_pop and log_poll,
      but neither are called on log_reset().
      
      This is a quick and non-breaking fix.  A better but not backward
      compatible option can be to have a free function callback as part of
      the entry itself (automatically called when needed, not by log_pop or
      log_poll).  This would also make it easier to avoid redundant buffer
      allocs/copies on the app side.
      4aeeb548
  2. 04 Oct, 2018 1 commit
  3. 27 Sep, 2018 2 commits
  4. 15 Aug, 2018 1 commit
  5. 07 Aug, 2018 1 commit
  6. 30 Jul, 2018 1 commit
    • Yossi Gottlieb's avatar
      Add raft_cancel_snapshot(). · 074091c1
      Yossi Gottlieb authored
      This cancels the snapshot operation and reverts back to the state we
      were in before raft_begin_snapshot().
      
      It is useful for cases where the snapshot operation fails.  It is the
      caller's responsibility to make sure the FSM state remains intact of
      course.
      074091c1
  7. 12 Jul, 2018 2 commits
  8. 20 Jun, 2018 2 commits
  9. 13 Jun, 2018 2 commits
  10. 11 Jun, 2018 3 commits
    • Yossi Gottlieb's avatar
      Ignore RequestVote when leader is established. (#58) · ab96a768
      Yossi Gottlieb authored
      This behavior is described in the original Raft paper and is required to
      prevent removed nodes from disrupting the cluster.
      
      This causes other problems though, as a split node may trigger election
      which is rejected but leaves it with a future term.  The generally
      accepted solution for this appears to be the use of PreVote RPC to avoid
      election that can never succeed.
      ab96a768
    • Willem Thiart's avatar
      Add virtraft2 · aa3586ff
      Willem Thiart authored
      aa3586ff
    • Willem Thiart's avatar
      Add notify_membership_event callback · 3ff2682d
      Willem Thiart authored
      This is an optional callback.
      
      This is useful for the user to know when a node has been added/removed,
      so that something like raft_node_set_udata can be set properly.
      3ff2682d
  11. 08 Jun, 2018 1 commit
  12. 07 Jun, 2018 2 commits
    • Willem Thiart's avatar
      Remove RAFT_LOGTYPE_SNAPSHOT · 700eebe6
      Willem Thiart authored
      The RAFT_LOGTYPE_SNAPSHOT was a bad design choice. It's better to not
      have this marker entry so that users don't have to check for the log
      entry type in the callbacks. Also, loading a snapshot correctly created
      this marker entry, but the compaction side did not. It's better to
      remove this log type than to fix this asymmetry.
      
      Fixes the following edge cases:
      - Server crashes if the last snapshot index is N and a appendentries
      message pops entries all the way back to index N.
      - Server sends an appendentries message with an invalid prev_log_idx and
      prev_log_term, causing the peer to crash.
      700eebe6
    • Yossi Gottlieb's avatar
      Off by one fixes (#65) · 9de8af47
      Yossi Gottlieb authored
      * Fix off-by-one in apply_log idx.
      
      * Fix log_get_from_idx() off by one error.
      9de8af47
  13. 17 May, 2018 4 commits
  14. 16 May, 2018 3 commits
  15. 08 Jan, 2018 2 commits
  16. 29 Dec, 2017 1 commit
    • Willem Thiart's avatar
      Fix: log edge cases · b912ff5a
      Willem Thiart authored
      The raft_log API is now being fuzzed tested. This change fixes all of
      the bugs detected by the fuzzer so far.
      b912ff5a
  17. 21 Nov, 2017 11 commits