database/mariadb-columnstore-engine
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Another incremental commit.

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This commit is contained in:
Patrick LeBlanc
2019-07-12 10:33:51 -05:00
parent 16dc887f20
commit 9ced374c81
4 changed files with 56 additions and 254 deletions
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97
versioning/BRM/sessionmanagerserver.cpp
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@ -85,7 +85,7 @@ const uint32_t SessionManagerServer::SS_FORCE = 1 << 5; // In combination w
const uint32_t SessionManagerServer::SS_QUERY_READY = 1 << 6; // Set by ProcManager when system is ready for queries
SessionManagerServer::SessionManagerServer() : unique32(0), unique64(0), txnidfd(-1)
SessionManagerServer::SessionManagerServer() : unique32(0), unique64(0)
{
config::Config* conf;
string stmp;
@ -119,26 +119,6 @@ SessionManagerServer::SessionManagerServer() : unique32(0), unique64(0), txnidfd
txnidFilename = conf->getConfig("SessionManager", "TxnIDFile");
if (false && !IDBPolicy::useHdfs())
{
txnidfd = open(txnidFilename.c_str(), O_RDWR | O_CREAT | O_BINARY, 0664);
if (txnidfd < 0)
{
perror("SessionManagerServer(): open");
throw runtime_error("SessionManagerServer: Could not open the transaction ID file");
}
//FIXME: do we need this on Win?
#ifndef _MSC_VER
else
{
fchmod(txnidfd, 0664);
}
#endif
}
semValue = maxTxns;
_verID = 0;
_sysCatVerID = 0;
@ -154,6 +134,10 @@ SessionManagerServer::SessionManagerServer() : unique32(0), unique64(0), txnidfd
}
}
SessionManagerServer::~SessionManagerServer()
{
}
void SessionManagerServer::reset()
{
mutex.try_lock();
@ -178,57 +162,7 @@ again:
// If we fail to read a full four bytes for any value, then the
// value isn't in the file, and we start with the default.
if (false && !IDBPolicy::useHdfs())
{
// Last transaction id
lseek(txnidfd, 0, SEEK_SET);
err = read(txnidfd, &lastTxnID, 4);
if (err < 0 && errno != EINTR)
{
perror("Sessionmanager::initSegment(): read");
throw runtime_error("SessionManagerServer: read failed, aborting");
}
else if (err < 0)
goto again;
else if (err == sizeof(int))
_verID = lastTxnID;
// last system catalog version id
err = read(txnidfd, &lastSysCatVerId, 4);
if (err < 0 && errno != EINTR)
{
perror("Sessionmanager::initSegment(): read");
throw runtime_error("SessionManagerServer: read failed, aborting");
}
else if (err < 0)
goto again;
else if (err == sizeof(int))
_sysCatVerID = lastSysCatVerId;
// System state. Contains flags regarding the suspend state of the system.
err = read(txnidfd, &systemState, 4);
if (err < 0 && errno == EINTR)
{
goto again;
}
else if (err == sizeof(int))
{
// Turn off the pending and force flags. They make no sense for a clean start.
// Turn off the ready flag. DMLProc will set it back on when
// initialized.
systemState &=
~(SS_READY | SS_QUERY_READY | SS_SUSPEND_PENDING | SS_SHUTDOWN_PENDING | SS_ROLLBACK | SS_FORCE);
}
else
{
// else no problem. System state wasn't saved. Might be an upgraded system.
systemState = 0;
}
}
else if (IDBPolicy::exists(txnidFilename.c_str()))
if (IDBPolicy::exists(txnidFilename.c_str()))
{
scoped_ptr<IDBDataFile> txnidfp(IDBDataFile::open(
IDBPolicy::getType(txnidFilename.c_str(),
@ -297,26 +231,7 @@ again:
*/
void SessionManagerServer::saveSystemState()
{
if (false && !IDBPolicy::useHdfs())
{
int err = 0;
uint32_t lSystemState = systemState;
// We don't save the pending flags, the force flag or the ready flags.
lSystemState &= ~(SS_READY | SS_QUERY_READY | SS_SUSPEND_PENDING | SS_SHUTDOWN_PENDING | SS_FORCE);
lseek(txnidfd, 8, SEEK_SET);
err = write(txnidfd, &lSystemState, sizeof(int));
if (err < 0)
{
perror("SessionManagerServer::saveSystemState(): write(systemState)");
throw runtime_error("SessionManagerServer::saveSystemState(): write(systemState) failed");
}
}
else
{
saveSMTxnIDAndState();
}
}
const QueryContext SessionManagerServer::verID()