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import os
import pytest
import time
from subprocess import call
from tests.common.environ import ImpalaTestClusterProperties
from tests.util.filesystem_utils import IS_HDFS, IS_LOCAL
from tests.common.custom_cluster_test_suite import CustomClusterTestSuite
class TestAutomaticCatalogInvalidation(CustomClusterTestSuite):
""" Test that tables are cached in the catalogd after usage for the configured time
and invalidated afterwards."""
query = "select count(*) from functional.alltypes"
# The following columns string presents in the catalog object iff the table loaded.
metadata_cache_string = "columns (list) = list<struct>"
url = "http://localhost:25020/catalog_object?object_type=TABLE&" \
# The test will run a query and assumes the table is loaded when the query finishes.
# The timeout should be larger than the time of the query.
timeout = 20 if ImpalaTestClusterProperties.get_instance().runs_slowly() or\
(not IS_HDFS and not IS_LOCAL) else 10
timeout_flag = "--invalidate_tables_timeout_s=" + str(timeout)
def get_workload(cls):
return 'functional-query'
def _get_catalog_object(self):
""" Return the catalog object of functional.alltypes serialized to string. """
return self.cluster.catalogd.service.read_debug_webpage(
def _run_test(self, cursor):
# The table is cached after usage.
assert self.metadata_cache_string in self._get_catalog_object()
# Wait 5 * table TTL for the invalidation to take effect.
max_wait_time = time.time() + self.timeout * 5
while True:
# The table is eventually evicted.
if self.metadata_cache_string not in self._get_catalog_object():
assert time.time() < max_wait_time
@CustomClusterTestSuite.with_args(catalogd_args=timeout_flag, impalad_args=timeout_flag)
def test_v1_catalog(self, cursor):
catalogd_args=timeout_flag + " --catalog_topic_mode=minimal",
impalad_args=timeout_flag + " --use_local_catalog")
def test_local_catalog(self, cursor):
def test_invalid_table(self):
""" Regression test for IMPALA-7606. Tables failed to be loaded don't have a
last used time and shouldn't be considered for invalidation."""
self.execute_query_expect_failure(self.client, "select * from functional.bad_serde")
# The table expires after 1 second. Sleeping for another logbufsecs=5 seconds to wait
# for the log to be flushed. Wait 4 more seconds to reduce flakiness.
assert "Unexpected exception thrown while attempting to automatically invalidate "\
"tables" not in open(os.path.join(self.impala_log_dir, "catalogd.INFO")).read()
catalogd_args="--invalidate_tables_on_memory_pressure "
"--invalidate_tables_gc_old_gen_full_threshold=0 "
def test_memory_pressure(self):
""" Test that memory-based invalidation kicks out all the tables after an GC."""
# This triggers a full GC as of openjdk 1.8.
call(["jmap", "-histo:live", str(self.cluster.catalogd.get_pid())])
# Sleep for logbufsecs=5 seconds to wait for the log to be flushed. Wait 5 more
# seconds to reduce flakiness.
assert self.metadata_cache_string not in self._get_catalog_object()