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New features (and bug fixes)

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1. alter large sequence
    2. subpartition
    2.1 split subpartition
    2.2 truncate subpartition
    3. 支持load
    4. 支持start-with/connect-by
    5. ...
This commit is contained in:
dengxuyue
2021-12-23 20:34:44 +08:00
committed by zhangzhiyang
parent 27bdb0d62b
commit c7b25efcff
1276 changed files with 332499 additions and 94042 deletions
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51
src/gausskernel/process/threadpool/threadpool_worker.cpp
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@ -131,8 +131,9 @@ int ThreadPoolWorker::StartUp()
}
Backend* bn = CreateBackend();
m_tid = initialize_worker_thread(THREADPOOL_WORKER, &port, (void*)this);
t_thrd.proc_cxt.MyPMChildSlot = 0;
if (m_tid == InvalidTid) {
ReleasePostmasterChildSlot(t_thrd.proc_cxt.MyPMChildSlot);
ReleasePostmasterChildSlot(bn->child_slot);
bn->pid = 0;
return STATUS_ERROR;
}
@ -170,6 +171,11 @@ void ThreadPoolWorker::WaitMission()
bool isRawSession = false;
Assert(t_thrd.int_cxt.InterruptHoldoffCount == 0);
if (unlikely(t_thrd.int_cxt.InterruptHoldoffCount > 0)) {
ereport(PANIC,
(errmodule(MOD_THREAD_POOL),
errmsg("InterruptHoldoffCount should be zero when get next session.")));
}
/*
* prevent any signal execep siguit.
* reset any pending signal and timer.
@ -222,7 +228,7 @@ bool ThreadPoolWorker::WakeUpToWork(knl_session_context* session)
{
bool succ = true;
pthread_mutex_lock(m_mutex);
if (likely(m_threadStatus != THREAD_EXIT)) {
if (likely(m_threadStatus != THREAD_EXIT && m_threadStatus != THREAD_PENDING)) {
m_currentSession = session;
pthread_cond_signal(m_cond);
} else {
@ -242,6 +248,21 @@ void ThreadPoolWorker::WakeUpToUpdate(ThreadStatus status)
pthread_mutex_unlock(m_mutex);
}
bool ThreadPoolWorker::WakeUpToPendingIfFree()
{
bool ans = false;
pthread_mutex_lock(m_mutex);
if (m_threadStatus != THREAD_EXIT && m_threadStatus != THREAD_PENDING && m_currentSession == NULL) {
m_threadStatus = THREAD_PENDING;
pthread_cond_signal(m_cond);
ans = true;
} else {
ans = false;
}
pthread_mutex_unlock(m_mutex);
return ans;
}
/*
* Some variable are session level, however they are used by some opensource
* component like postgis, we can not move them to knl_session_context directly.
@ -354,6 +375,14 @@ void ThreadPoolWorker::WaitNextSession()
/* Wait if the thread was turned into pending mode. */
if (unlikely(m_threadStatus == THREAD_PENDING)) {
Pending();
/* pending thread must don't have session on it */
if (m_currentSession != NULL) {
u_sess = m_currentSession;
ereport(FATAL,
(errmodule(MOD_THREAD_POOL),
errmsg("pending thread should not have session %lu on it",
m_currentSession->session_id)));
}
} else if (unlikely(m_threadStatus == THREAD_EXIT)) {
ShutDownIfNecessary();
} else if (m_currentSession != NULL) {
@ -381,8 +410,8 @@ void ThreadPoolWorker::WaitNextSession()
u_sess = t_thrd.fake_session;
ereport(DEBUG2,
(errmodule(MOD_THREAD_POOL),
errmsg("TryFeedWorker remove a session:%lu from m_readySessionList into worker",
m_currentSession->session_id)));
errmsg("TryFeedWorker remove a session:%lu from m_readySessionList into worker, status %d",
m_currentSession->session_id, m_threadStatus)));
}
}
}
@ -418,21 +447,14 @@ void ThreadPoolWorker::ShutDownIfNecessary()
/* there is time window which the cancle signal has arrived but ignored by prevent signal called before,
* so we rebuild the signal status here in case that happens. */
if (unlikely(m_currentSession != NULL && m_currentSession->status == KNL_SESS_CLOSE)) {
ereport(LOG, (errmodule(MOD_THREAD_POOL),
errmsg("Cancle signal has arrived but ignored by prevent signal called before, rebuild it.")));
t_thrd.int_cxt.ClientConnectionLost = true;
ereport(ERROR, (errmodule(MOD_THREAD_POOL),
errmsg("Interrupt signal has been received, but ignored by preventSignal, rebuild it.")));
}
}
void ThreadPoolWorker::CleanThread()
{
if (m_currentSession != NULL && t_thrd.libpq_cxt.PqSendPointer > 0) {
int res = pq_flush();
if (res != 0) {
ereport(WARNING, (errmsg("[cleanup thread] failed to flush the remaining content. detail: %d", res)));
}
}
/*
* In thread pool mode, ensure that packet transmission must be completed before thread switchover.
* Otherwise, packet format disorder may occurs.
@ -857,6 +879,9 @@ static void ResetSignalHandle()
(void)gspqsignal(SIGALRM, handle_sig_alarm);
(void)gspqsignal(SIGQUIT, quickdie); /* hard crash time */
(void)gspqsignal(SIGTERM, die); /* cancel current query and exit */
gs_signal_setmask(&t_thrd.libpq_cxt.UnBlockSig, NULL);
/* not necessary, unblock for sure */
gs_signal_unblock_sigusr2();
}
static void SessionSetBackendOptions()