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Galera4

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This commit is contained in:
Brave Galera Crew
2019-01-23 15:30:00 +04:00
committed by Sergey Vojtovich
parent 382115b992
commit 36a2a185fe
791 changed files with 28035 additions and 8865 deletions
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76
sql/lock.cc
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@ -1100,20 +1100,16 @@ void Global_read_lock::unlock_global_read_lock(THD *thd)
#ifdef WITH_WSREP
if (m_state == GRL_ACQUIRED_AND_BLOCKS_COMMIT)
{
if (WSREP(thd) || wsrep_node_is_donor())
Wsrep_server_state& server_state= Wsrep_server_state::instance();
if (server_state.state() == Wsrep_server_state::s_donor)
{
/* TODO: maybe redundant here?: */
wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
wsrep->resume(wsrep);
/* resync here only if we did implicit desync earlier */
if (!wsrep_desync && wsrep_node_is_synced())
{
int ret = wsrep->resync(wsrep);
if (ret != WSREP_OK)
{
WSREP_WARN("resync failed %d for FTWRL: db: %s, query: %s",
ret, thd->get_db(), thd->query());
}
}
server_state.resume();
}
else if (WSREP(thd))
{
server_state.resume_and_resync();
}
}
#endif /* WITH_WSREP */
@ -1159,62 +1155,30 @@ bool Global_read_lock::make_global_read_lock_block_commit(THD *thd)
m_state= GRL_ACQUIRED_AND_BLOCKS_COMMIT;
#ifdef WITH_WSREP
/* Native threads should bail out before wsrep oprations to follow.
Donor servicing thread is an exception, it should pause provider but not desync,
as it is already desynced in donor state
Donor servicing thread is an exception, it should pause provider
but not desync, as it is already desynced in donor state
*/
if (!WSREP(thd) && !wsrep_node_is_donor())
Wsrep_server_state& server_state= Wsrep_server_state::instance();
if (!WSREP(thd) && server_state.state() != Wsrep_server_state::s_donor)
{
DBUG_RETURN(FALSE);
}
/* if already desynced or donor, avoid double desyncing
if not in PC and synced, desyncing is not possible either
*/
if (wsrep_desync || !wsrep_node_is_synced())
wsrep::seqno paused_seqno;
if (server_state.state() == Wsrep_server_state::s_donor)
{
WSREP_DEBUG("desync set upfont, skipping implicit desync for FTWRL: %d",
wsrep_desync);
paused_seqno= server_state.pause();
}
else
{
int rcode;
WSREP_DEBUG("running implicit desync for node");
rcode = wsrep->desync(wsrep);
if (rcode != WSREP_OK)
{
WSREP_WARN("FTWRL desync failed %d for schema: %s, query: %s",
rcode, thd->get_db(), thd->query());
my_message(ER_LOCK_DEADLOCK, "wsrep desync failed for FTWRL", MYF(0));
DBUG_RETURN(TRUE);
}
paused_seqno= server_state.desync_and_pause();
}
long long ret = wsrep->pause(wsrep);
if (ret >= 0)
WSREP_INFO("Server paused at: %lld", paused_seqno.get());
if (paused_seqno.get() >= 0)
{
wsrep_locked_seqno= ret;
}
else if (ret != -ENOSYS) /* -ENOSYS - no provider */
{
long long ret = wsrep->pause(wsrep);
if (ret >= 0)
{
wsrep_locked_seqno= ret;
}
else if (ret != -ENOSYS) /* -ENOSYS - no provider */
{
WSREP_ERROR("Failed to pause provider: %lld (%s)", -ret, strerror(-ret));
/*
For some reason Galera wants to crash here in debug build.
It is equivalent of original assertion.
*/
DBUG_ASSERT(0);
wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
my_error(ER_LOCK_DEADLOCK, MYF(0));
DBUG_RETURN(TRUE);
}
wsrep_locked_seqno= paused_seqno.get();
}
#endif /* WITH_WSREP */
DBUG_RETURN(FALSE);