def impl(context, seg, contents):
role = ""
if seg == "primary":
role = 'p'
elif seg == "mirror":
role = 'm'
else:
raise Exception('Valid segment types are "primary" and "mirror"')
contents = contents.split(',')
for content in contents:
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
dbid = dbconn.querySingleton(
conn,
"SELECT dbid FROM gp_segment_configuration WHERE content = %s AND preferred_role = '%s'"
% (content, role))
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
actual_tuples = dbconn.querySingleton(
conn,
"SELECT count(*) FROM gp_configuration_history WHERE dbid = %d AND gp_configuration_history.desc LIKE 'gprecoverseg: segment config for backout%%';"
% dbid)
original_tuples = context.original_config_history_info["{}_{}".format(
content, role)]
if actual_tuples != original_tuples + 1: # Running the backout script should have inserted exactly 1 entry
raise Exception(
"Expected configuration history table for dbid {} to contain {} backout entries, found {}"
.format(dbid, original_tuples + 1, actual_tuples))
def impl(context, contents):
contents = set(contents.split(','))
all_segments = GpArray.initFromCatalog(dbconn.DbURL()).getDbList()
context.original_seg_info = {}
context.original_config_history_info = {}
context.original_config_history_backout_count = 0
for seg in all_segments:
content = str(seg.getSegmentContentId())
if content not in contents:
continue
preferred_role = seg.getSegmentPreferredRole()
key = "{}_{}".format(content, preferred_role)
context.original_seg_info[key] = seg
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
dbid = dbconn.querySingleton(
conn,
"SELECT dbid FROM gp_segment_configuration WHERE content = %s AND "
"preferred_role = '%s'" % (content, preferred_role))
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
num_tuples = dbconn.querySingleton(
conn,
"SELECT count(*) FROM gp_configuration_history WHERE dbid = %d AND "
"gp_configuration_history.desc LIKE 'gprecoverseg: segment config for backout%%';"
% dbid)
context.original_config_history_info[key] = num_tuples
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
context.original_config_history_backout_count = dbconn.querySingleton(
conn, "SELECT count(*) FROM gp_configuration_history WHERE "
"gp_configuration_history.desc LIKE 'gprecoverseg: segment config for backout%%';"
)
def check_count_for_specific_query(dbname, query, nrows):
NUM_ROWS_QUERY = '%s' % query
# We want to bubble up the exception so that if table does not exist, the test fails
with closing(dbconn.connect(dbconn.DbURL(dbname=dbname), unsetSearchPath=False)) as conn:
result = dbconn.querySingleton(conn, NUM_ROWS_QUERY)
if result != nrows:
raise Exception('%d rows in query: %s. Expected row count = %d' % (result, query, nrows))
def has_expected_status(content, preferred_role, expected_status):
with dbconn.connect(dbconn.DbURL(dbname="template1"),
unsetSearchPath=False) as conn:
status = dbconn.querySingleton(
conn,
"SELECT status FROM gp_segment_configuration WHERE content = %s AND preferred_role = '%s'"
% (content, preferred_role))
return status == expected_status
def execute_sql_singleton(dbname, sql):
result = None
with closing(dbconn.connect(dbconn.DbURL(dbname=dbname), unsetSearchPath=False)) as conn:
result = dbconn.querySingleton(conn, sql)
if result is None:
raise Exception("error running query: %s" % sql)
return result
def impl(context, tablename, dbname):
conn = dbconn.connect(dbconn.DbURL(dbname=dbname), unsetSearchPath=False)
try:
query = "select count(*) from pg_statistic where starelid='%s'::regclass;" % tablename
num_tuples = dbconn.querySingleton(conn, query)
if num_tuples == 0:
raise Exception("Expected partition table %s to contain root statistics" % tablename)
finally:
conn.close()
def validate_mid_level_partitions(self, schema_name, table_name):
partition_level, max_level = None, None
conn = dbconn.connect(
dbconn.DbURL(dbname=self.database, port=self.port))
try:
parent_schema, parent_table = self.parent_partition_map[(
schema_name, table_name)]
if (parent_schema, parent_table) == (schema_name, table_name):
return
try:
max_level = dbconn.querySingleton(
conn, """SELECT max(partitionlevel)
FROM pg_partitions
WHERE tablename='%s'
AND schemaname='%s'
""" %
(parent_table, parent_schema))
except Exception as e:
logger.debug(
'Unable to get the maximum partition level for table %s: (%s)'
% (table_name, str(e)))
try:
partition_level = dbconn.querySingleton(
conn, """SELECT partitionlevel
FROM pg_partitions
WHERE partitiontablename='%s'
AND partitionschemaname='%s'
""" %
(table_name, schema_name))
except Exception as e:
logger.debug(
'Unable to get the partition level for table %s: (%s)' %
(table_name, str(e)))
if partition_level != max_level:
logger.error(
'Partition level of the table = %s, Max partition level = %s'
% (partition_level, max_level))
raise Exception(
'Mid Level partition %s.%s is not supported by gpreload. Please specify only leaf partitions or parent table name'
% (schema_name, table_name))
finally:
conn.close()
def get_redistribute_status(self):
sql = 'select status from gpexpand.status order by updated desc limit 1'
dburl = dbconn.DbURL(dbname=self.database)
conn = dbconn.connect(dburl, encoding='UTF8', unsetSearchPath=False)
status = dbconn.querySingleton(conn, sql)
if status == 'EXPANSION COMPLETE':
rc = 0
else:
rc = 1
return rc
def must_have_expected_status(content, preferred_role, expected_status):
with dbconn.connect(dbconn.DbURL(dbname="template1"),
unsetSearchPath=False) as conn:
status = dbconn.querySingleton(
conn,
"SELECT status FROM gp_segment_configuration WHERE content = %s AND preferred_role = '%s'"
% (content, preferred_role))
if status != expected_status:
raise Exception("Expected status for role %s to be %s, but it is %s" %
(preferred_role, expected_status, status))
def check_row_count(context, tablename, dbname, nrows):
NUM_ROWS_QUERY = 'select count(*) from %s' % tablename
# We want to bubble up the exception so that if table does not exist, the test fails
if hasattr(context, 'standby_was_activated') and context.standby_was_activated is True:
dburl = dbconn.DbURL(dbname=dbname, port=context.standby_port, hostname=context.standby_hostname)
else:
dburl = dbconn.DbURL(dbname=dbname)
with closing(dbconn.connect(dburl, unsetSearchPath=False)) as conn:
result = dbconn.querySingleton(conn, NUM_ROWS_QUERY)
if result != nrows:
raise Exception('%d rows in table %s.%s, expected row count = %d' % (result, dbname, tablename, nrows))
def impl(context, expected_additional_entries):
with closing(dbconn.connect(dbconn.DbURL(),
unsetSearchPath=False)) as conn:
actual_backout_entries = int(
dbconn.querySingleton(
conn, "SELECT count(*) FROM gp_configuration_history WHERE "
"gp_configuration_history.desc LIKE "
"'gprecoverseg: segment config for backout%%';"))
expected_total_entries = int(context.original_config_history_backout_count
) + int(expected_additional_entries)
if actual_backout_entries != expected_total_entries:
raise Exception(
"Expected configuration history table to have {} backout entries, found {}"
.format(
context.original_config_history_backout_count +
expected_additional_entries, actual_backout_entries))
def validate_table(self, schema_name, table_name):
conn = dbconn.connect(
dbconn.DbURL(dbname=self.database, port=self.port))
try:
c = dbconn.querySingleton(
conn, """SELECT count(*)
FROM pg_class, pg_namespace
WHERE pg_namespace.nspname = '{schema}'
AND pg_class.relname = '{table}'""".
format(schema=schema_name, table=table_name))
if not c:
raise ExceptionNoStackTraceNeeded(
'Table {schema}.{table} does not exist'.format(
schema=schema_name, table=table_name))
finally:
conn.close()
def impl(context, contents):
contents = contents.split(',')
for content in contents:
with closing(
dbconn.connect(dbconn.DbURL(dbname='template1'),
unsetSearchPath=False)) as conn:
for role in [ROLE_PRIMARY, ROLE_MIRROR]:
actual_datadir = dbconn.querySingleton(
conn,
"SELECT datadir FROM gp_segment_configuration WHERE preferred_role='{}' AND "
"content = {};".format(role, content))
expected_datadir = context.original_seg_info["{}_{}".format(
content, role)].getSegmentDataDirectory()
if not expected_datadir == actual_datadir:
raise Exception(
"Expected datadir {}, got {} for content {}".format(
expected_datadir, actual_datadir, content))
