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# under the License.
# Tests for query expiration.
import json
import pytest
from urllib2 import urlopen
from tests.common.environ import IS_DOCKERIZED_TEST_CLUSTER
from tests.common.impala_cluster import ImpalaCluster
from tests.hs2.hs2_test_suite import HS2TestSuite
from TCLIService import TCLIService
class TestJsonEndpoints(HS2TestSuite):
def _get_json_queries(self, http_addr):
"""Get the json output of the /queries page from the impalad web UI at http_addr."""
# The hostnames in the dockerized cluster may not be externally reachable.
cluster = ImpalaCluster.get_e2e_test_cluster()
return cluster.impalads[0].service.get_debug_webpage_json("/queries")
resp = urlopen("http://%s/queries?json" % http_addr)
assert resp.msg == 'OK'
return json.loads(
def test_waiting_in_flight_queries(self):
"""Confirm that the in_flight_queries endpoint shows a query at eos as waiting"""
open_session_req = TCLIService.TOpenSessionReq()
default_database = "functional"
open_session_req.configuration = {"use:database": default_database}
open_session_resp = self.hs2_client.OpenSession(open_session_req)
http_addr = open_session_resp.configuration['http_addr']
# Execute a SELECT, and check that in_flight_queries shows one executing query.
select_statement_req = TCLIService.TExecuteStatementReq()
select_statement_req.sessionHandle = open_session_resp.sessionHandle
select_statement_req.statement = "SELECT * FROM functional.alltypes LIMIT 0"
select_statement_resp = self.hs2_client.ExecuteStatement(select_statement_req)
queries_json = self._get_json_queries(http_addr)
assert len(queries_json["in_flight_queries"]) == 1
assert queries_json["num_in_flight_queries"] == 1
assert queries_json["num_executing_queries"] == 1
assert queries_json["num_waiting_queries"] == 0
query = queries_json["in_flight_queries"][0]
assert query["default_db"] == default_database
assert query["stmt"] == select_statement_req.statement
assert query["stmt_type"] == "QUERY"
assert query["rows_fetched"] == 0
assert query["executing"]
assert not query["waiting"]
# Fetch the results, putting the query at eos, and check that in_flight_queries
# shows one waiting query.
fetch_results_req = TCLIService.TFetchResultsReq()
fetch_results_req.operationHandle = select_statement_resp.operationHandle
fetch_results_req.maxRows = 100
fetch_results_resp = self.hs2_client.FetchResults(fetch_results_req)
# Fetch one more time to ensure that query is at EOS (first fetch might return 0-size
# row batch)
fetch_results_resp = self.hs2_client.FetchResults(fetch_results_req)
queries_json = self._get_json_queries(http_addr)
assert len(queries_json["in_flight_queries"]) == 1
assert queries_json["num_in_flight_queries"] == 1
assert queries_json["num_executing_queries"] == 0
assert queries_json["num_waiting_queries"] == 1
query = queries_json["in_flight_queries"][0]
assert not query["executing"]
assert query["waiting"]
# Close the query and check that in_flight_queries is empty.
close_operation_req = TCLIService.TCloseOperationReq()
close_operation_req.operationHandle = select_statement_resp.operationHandle
close_operation_resp = self.hs2_client.CloseOperation(close_operation_req)
queries_json = self._get_json_queries(http_addr)
assert len(queries_json["in_flight_queries"]) == 0
assert queries_json["num_in_flight_queries"] == 0
assert queries_json["num_executing_queries"] == 0
assert queries_json["num_waiting_queries"] == 0