From: Serge Petrenko via Tarantool-patches <tarantool-patches@dev.tarantool.org> To: v.shpilevoy@tarantool.org, gorcunov@gmail.com Cc: tarantool-patches@dev.tarantool.org Subject: [Tarantool-patches] [PATCH v4 05/16] replication: add META stage to JOIN Date: Wed, 14 Jul 2021 21:25:33 +0300 [thread overview] Message-ID: <5508c21501bda07f9e9238de16ebb3f5cfb6df36.1626287002.git.sergepetrenko@tarantool.org> (raw) In-Reply-To: <cover.1626287002.git.sergepetrenko@tarantool.org> The new META stage is part of server's response to a join request. It's marked by IPROTO_JOIN_META and IPROTO_JOIN_SNAPSHOT requests and goes before the actual snapshot data. Prerequisite #6034 @TarantoolBot document Title: new protocol stage during JOIN A new stage is added to the stream of JOIN rows coming from master. The stage is marked with a bodyless row with type IPROTO_JOIN_META = 71 Once all the rows from the stage are sent out, the JOIN continues as before (as a stream of snapshot rows). The end of META stage is marked with a row of type IPROTO_JOIN_SNAPSHOT = 72 The stage contains the rows that are necessary for instance initialization (current Raft term, current state of synchronous transaction queue), but do not belong to any system space. --- src/box/applier.cc | 17 ++++++++++++++++- src/box/box.cc | 5 +++-- src/box/iproto_constants.h | 2 ++ src/box/relay.cc | 19 ++++++++++++++++++- src/box/relay.h | 4 +++- 5 files changed, 42 insertions(+), 5 deletions(-) diff --git a/src/box/applier.cc b/src/box/applier.cc index 07fe7f5c7..0f81b7cc4 100644 --- a/src/box/applier.cc +++ b/src/box/applier.cc @@ -447,12 +447,26 @@ applier_wait_snapshot(struct applier *applier) xrow_decode_vclock_xc(&row, &replicaset.vclock); } + coio_read_xrow(coio, ibuf, &row); + if (row.type == IPROTO_JOIN_META) { + /* Read additional metadata. Empty at the moment. */ + do { + coio_read_xrow(coio, ibuf, &row); + if (iproto_type_is_error(row.type)) { + xrow_decode_error_xc(&row); + } else if (row.type != IPROTO_JOIN_SNAPSHOT) { + tnt_raise(ClientError, ER_UNKNOWN_REQUEST_TYPE, + (uint32_t)row.type); + } + } while (row.type != IPROTO_JOIN_SNAPSHOT); + coio_read_xrow(coio, ibuf, &row); + } + /* * Receive initial data. */ uint64_t row_count = 0; while (true) { - coio_read_xrow(coio, ibuf, &row); applier->last_row_time = ev_monotonic_now(loop()); if (iproto_type_is_dml(row.type)) { if (apply_snapshot_row(&row) != 0) @@ -477,6 +491,7 @@ applier_wait_snapshot(struct applier *applier) tnt_raise(ClientError, ER_UNKNOWN_REQUEST_TYPE, (uint32_t) row.type); } + coio_read_xrow(coio, ibuf, &row); } return row_count; diff --git a/src/box/box.cc b/src/box/box.cc index 6d5516682..8c695686e 100644 --- a/src/box/box.cc +++ b/src/box/box.cc @@ -2474,7 +2474,7 @@ box_process_fetch_snapshot(struct ev_io *io, struct xrow_header *header) /* Send the snapshot data to the instance. */ struct vclock start_vclock; - relay_initial_join(io->fd, header->sync, &start_vclock); + relay_initial_join(io->fd, header->sync, &start_vclock, 0); say_info("read-view sent."); /* Remember master's vclock after the last request */ @@ -2672,7 +2672,8 @@ box_process_join(struct ev_io *io, struct xrow_header *header) * Initial stream: feed replica with dirty data from engines. */ struct vclock start_vclock; - relay_initial_join(io->fd, header->sync, &start_vclock); + relay_initial_join(io->fd, header->sync, &start_vclock, + replica_version_id); say_info("initial data sent."); /** diff --git a/src/box/iproto_constants.h b/src/box/iproto_constants.h index 137bee9da..e913801a8 100644 --- a/src/box/iproto_constants.h +++ b/src/box/iproto_constants.h @@ -261,6 +261,8 @@ enum iproto_type { IPROTO_FETCH_SNAPSHOT = 69, /** REGISTER request to leave anonymous replication. */ IPROTO_REGISTER = 70, + IPROTO_JOIN_META = 71, + IPROTO_JOIN_SNAPSHOT = 72, /** Vinyl run info stored in .index file */ VY_INDEX_RUN_INFO = 100, diff --git a/src/box/relay.cc b/src/box/relay.cc index 60f527b7f..4ebe0fb06 100644 --- a/src/box/relay.cc +++ b/src/box/relay.cc @@ -392,7 +392,8 @@ relay_set_cord_name(int fd) } void -relay_initial_join(int fd, uint64_t sync, struct vclock *vclock) +relay_initial_join(int fd, uint64_t sync, struct vclock *vclock, + uint32_t replica_version_id) { struct relay *relay = relay_new(NULL); if (relay == NULL) @@ -432,6 +433,22 @@ relay_initial_join(int fd, uint64_t sync, struct vclock *vclock) row.sync = sync; coio_write_xrow(&relay->io, &row); + /* + * Version is present starting with 2.7.3, 2.8.2, 2.9.1 + * All these versions know of additional META stage of initial join. + */ + if (replica_version_id > 0) { + /* Mark the beginning of the metadata stream. */ + row.type = IPROTO_JOIN_META; + coio_write_xrow(&relay->io, &row); + + /* Empty at the moment. */ + + /* Mark the end of the metadata stream. */ + row.type = IPROTO_JOIN_SNAPSHOT; + coio_write_xrow(&relay->io, &row); + } + /* Send read view to the replica. */ engine_join_xc(&ctx, &relay->stream); } diff --git a/src/box/relay.h b/src/box/relay.h index 615ffb75d..112428ae8 100644 --- a/src/box/relay.h +++ b/src/box/relay.h @@ -116,9 +116,11 @@ relay_push_raft(struct relay *relay, const struct raft_request *req); * @param fd client connection * @param sync sync from incoming JOIN request * @param vclock[out] vclock of the read view sent to the replica + * @param replica_version_id peer's version */ void -relay_initial_join(int fd, uint64_t sync, struct vclock *vclock); +relay_initial_join(int fd, uint64_t sync, struct vclock *vclock, + uint32_t replica_version_id); /** * Send final JOIN rows to the replica. -- 2.30.1 (Apple Git-130)
next prev parent reply other threads:[~2021-07-14 18:28 UTC|newest] Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-14 18:25 [Tarantool-patches] [PATCH v4 00/16] forbid implicit limbo ownership transition Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 01/16] replication: always send raft state to subscribers Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 02/16] txn_limbo: fix promote term filtering Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 03/16] txn_limbo: persist the latest effective promote in snapshot Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 04/16] replication: encode version in JOIN request Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` Serge Petrenko via Tarantool-patches [this message] 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 06/16] replication: send latest effective promote in initial join Serge Petrenko via Tarantool-patches 2021-07-21 23:24 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-23 7:44 ` Sergey Petrenko via Tarantool-patches 2021-07-26 23:43 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 07/16] replication: send current Raft term in join response Serge Petrenko via Tarantool-patches 2021-07-21 23:24 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-23 7:44 ` Sergey Petrenko via Tarantool-patches 2021-07-26 23:43 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-29 20:46 ` Sergey Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 08/16] raft: refactor raft_new_term() Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 09/16] box: split promote() into reasonable parts Serge Petrenko via Tarantool-patches 2021-07-21 23:26 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-23 7:45 ` Sergey Petrenko via Tarantool-patches 2021-07-26 23:44 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-29 20:46 ` Sergey Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 10/16] box: make promote always bump the term Serge Petrenko via Tarantool-patches 2021-07-26 23:45 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-29 20:46 ` Sergey Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 11/16] box: make promote on the current leader a no-op Serge Petrenko via Tarantool-patches 2021-07-21 23:26 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-23 7:45 ` Sergey Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 12/16] box: fix an assertion failure after a spurious wakeup in promote Serge Petrenko via Tarantool-patches 2021-07-21 23:29 ` Vladislav Shpilevoy via Tarantool-patches 2021-07-23 7:45 ` Sergey Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 13/16] box: allow calling promote on a candidate Serge Petrenko via Tarantool-patches 2021-07-15 14:06 ` Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 14/16] box: extract promote() settings to a separate method Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 15/16] replication: forbid implicit limbo owner transition Serge Petrenko via Tarantool-patches 2021-07-14 18:25 ` [Tarantool-patches] [PATCH v4 16/16] box: introduce `box.ctl.demote` Serge Petrenko via Tarantool-patches 2021-07-15 17:13 ` Serge Petrenko via Tarantool-patches 2021-07-15 20:11 ` [Tarantool-patches] [PATCH v4 17/16] replication: fix flaky election_qsync.test Serge Petrenko via Tarantool-patches 2021-07-26 23:43 ` [Tarantool-patches] [PATCH v4 00/16] forbid implicit limbo ownership transition Vladislav Shpilevoy via Tarantool-patches 2021-07-29 20:47 ` Sergey Petrenko via Tarantool-patches
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