def testHeadAndTail(self):
res = self.odps_df.head(2)
self.assertEqual(len(res), 2)
df = self.odps_df[self.odps_df['name'] == 'name1']
res = df.head(1)
self.assertEqual(len(res), 1)
self.assertTrue(context.is_cached(df))
res = self.odps_df.tail(2)
self.assertEqual(len(res), 2)
self.assertTrue(all(it > 1 for it in res.values['id']))
self.assertEqual(len(self.odps_df.name.head(2)), 2)
self.assertEqual(len(self.odps_df.name.tail(2)), 2)
res = self.pd_df.head(1)
self.assertEqual(len(res), 1)
df = self.pd_df[self.pd_df['name'] == 'name1']
res = df.head(1)
self.assertEqual(len(res), 1)
self.assertTrue(context.is_cached(df))
res = self.pd_df.tail(1)
self.assertEqual(len(res), 1)
self.assertEqual(res.values['id'][0], 6)
self.assertEqual(len(self.pd_df.name.head(1)), 1)
self.assertEqual(len(self.pd_df.name.tail(1)), 1)
class TunnelOnlyODPSEngine(ODPSSQLEngine):
def _do_execute(self, *args, **kwargs):
kwargs['_force_tunnel'] = True
return super(TunnelOnlyODPSEngine,
self)._do_execute(*args, **kwargs)
engine = MixedEngine(self.odps)
engine._odpssql_engine = TunnelOnlyODPSEngine(self.odps)
res = engine.execute(self.odps_df['id'], head=3)
self.assertIsNotNone(res)
self.assertEqual(sum(res.values['id']), 6)
table_name = tn('pyodps_df_mixed2')
self.odps.delete_table(table_name, if_exists=True)
table = next(self.odps_df.data_source())
table2 = self.odps.create_table(table_name, table.schema)
try:
res = DataFrame(table2).head(10)
self.assertEqual(len(res), 0)
finally:
table2.drop()
def testHeadAndTail(self):
res = self.odps_df.head(2)
self.assertEqual(len(res), 2)
df = self.odps_df[self.odps_df["name"] == "name1"]
res = df.head(1)
self.assertEqual(len(res), 1)
self.assertIsNotNone(df._cache_data)
res = self.odps_df.tail(2)
self.assertEqual(len(res), 2)
self.assertTrue(all(it > 1 for it in res.values["id"]))
self.assertEqual(len(self.odps_df.name.head(2)), 2)
self.assertEqual(len(self.odps_df.name.tail(2)), 2)
res = self.pd_df.head(1)
self.assertEqual(len(res), 1)
df = self.pd_df[self.pd_df["name"] == "name1"]
res = df.head(1)
self.assertEqual(len(res), 1)
self.assertIsNotNone(df._cache_data)
res = self.pd_df.tail(1)
self.assertEqual(len(res), 1)
self.assertEqual(res.values["id"][0], 6)
self.assertEqual(len(self.pd_df.name.head(1)), 1)
self.assertEqual(len(self.pd_df.name.tail(1)), 1)
class TunnelOnlyODPSEngine(ODPSEngine):
def execute(self, expr, **kw):
expr = self._pre_process(expr)
head = kw.get("head")
return self._handle_cases(expr, head=head)
engine = MixedEngine(self.odps)
engine._odpssql_engine = TunnelOnlyODPSEngine(self.odps, global_optimize=False)
res = engine.execute(self.odps_df["id"], head=3)
self.assertIsNotNone(res)
self.assertEqual(sum(res.values["id"]), 6)
table_name = tn("pyodps_df_mixed2")
self.odps.delete_table(table_name, if_exists=True)
table = next(self.odps_df.data_source())
table2 = self.odps.create_table(table_name, table.schema)
try:
res = DataFrame(table2).head(10)
self.assertEqual(len(res), 0)
finally:
table2.drop()
