Skip to content

0.7.1:

Compare
Choose a tag to compare
@drmingdrmer drmingdrmer released this 22 Aug 16:33
· 1576 commits to main since this release
v0.7.1
19fa9f0

v0.7.1

Added:

  • Added: ea696474 add feature-flag: bt enables backtrace; by 张炎泼; 2022-03-12

    --features bt enables backtrace when generating errors.
    By default errors does not contain backtrace info.

    Thus openraft can be built on stable rust by default.

    To use on stable rust with backtrace, set RUSTC_BOOTSTRAP=1, e.g.:

    RUSTUP_TOOLCHAIN=stable RUSTC_BOOTSTRAP=1 make test

v0.7.0-alpha.3

Changed:

  • Changed: f99ade30 API: move default impl methods in RaftStorage to StorageHelper; by 张炎泼; 2022-07-04

Fixed:

  • Fixed: 44381b0c when handling append-entries, if prev_log_id is purged, it should not delete any logs.; by 张炎泼; 2022-08-14

    When handling append-entries, if the local log at prev_log_id.index is
    purged, a follower should not believe it is a conflict and should
    not delete all logs. It will get committed log lost.

    To fix this issue, use last_applied instead of committed:
    last_applied is always the committed log id, while committed is not
    persisted and may be smaller than the actually applied, when a follower
    is restarted.

v0.7.0-alpha.2

Fixed:

  • Fixed: 30058c03 #424 wrong range when searching for membership entries: [end-step, end).; by 张炎泼; 2022-07-03

    The iterating range searching for membership log entries should be
    [end-step, end), not [start, end).
    With this bug it will return duplicated membership entries.

v0.7.0-alpha.1

Fixed:

  • Fixed: d836d85c if there may be more logs to replicate, continue to call send_append_entries in next loop, no need to wait heartbeat tick; by lichuang; 2022-01-04

  • Fixed: 5a026674 defensive_no_dirty_log hangs tests; by YangKian; 2022-01-08

  • Fixed: 8651625e save leader_id if a higher term is seen when handling append-entries RPC; by 张炎泼; 2022-01-10

    Problem:

    A follower saves hard state (term=msg.term, voted_for=None)
    when a msg.term > local.term when handling append-entries RPC.

    This is quite enough to be correct but not perfect. Correct because:

    • In one term, only an established leader will send append-entries;

    • Thus, there is a quorum voted for this leader;

    • Thus, no matter what voted_for is saved, it is still correct. E.g.
      when handling append-entries, a follower node could save hard state
      (term=msg.term, voted_for=Some(ANY_VALUE)).

    The problem is that a follower already knows the legal leader for a term
    but still does not save it. This leads to an unstable cluster state: The
    test sometimes fails.

    Solution:

    A follower always save hard state with the id of a known legal leader.

  • Fixed: 1a781e1b when lack entry, the snapshot to build has to include at least all purged logs; by 张炎泼; 2022-01-18

  • Fixed: a0a94af7 span.enter() in async loop causes memory leak; by 张炎泼; 2022-06-17

    It is explained in:
    https://onesignal.com/blog/solving-memory-leaks-in-rust/

Changed:

  • Changed: c9c8d898 trait RaftStore: remove get_membership_config(), add last_membership_in_log() and get_membership() with default impl; by drdr xp; 2022-01-04

    Goal: minimize the work for users to implement a correct raft application.

    Now RaftStorage provides default implementations for get_membership()
    and last_membership_in_log().

    These two methods just can be implemented with other basic user impl
    methods.

  • Changed: abda0d10 rename RaftStorage methods do_log_compaction: build_snapshot, delete_logs_from: delete_log; by 张炎泼; 2022-01-15

  • Changed: a52a9300 RaftStorage::get_log_state() returns last purge log id; by 张炎泼; 2022-01-16

    • Change: get_log_state() returns the last_purged_log_id instead of the first_log_id.
      Because there are some cases in which log are empty:
      When a snapshot is install that covers all logs,
      or when max_applied_log_to_keep is 0.

      Returning None is not clear about if there are no logs at all or
      all logs are deleted.

      In such cases, raft still needs to maintain log continuity
      when repilcating. Thus the last log id that once existed is important.
      Previously this is done by checking the last_applied_log_id, which is
      dirty and buggy.

      Now an implementation of RaftStorage has to maintain the
      last_purged_log_id in its store.

    • Change: Remove first_id_in_log(), last_log_id(), first_known_log_id(),
      because concepts are changed.

    • Change: Split delete_logs() into two method for clarity:

      delete_conflict_logs_since() for deleting conflict logs when the
      replication receiving end find a conflict log.

      purge_logs_upto() for cleaning applied logs

    • Change: Rename finalize_snapshot_installation() to install_snapshot().

  • Changed: 7424c968 remove unused error MembershipError::Incompatible; by 张炎泼; 2022-01-17

  • Changed: beeae721 add ChangeMembershipError sub error for reuse; by 张炎泼; 2022-01-17

Assets 2
Loading