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CM agent received terrible heartbeat response from master,then deactivate parcels and stop processes

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CM agent received terrible heartbeat response from master,then deactivate parcels and stop processes

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All CM agents receive heartbeat response from master,data_hash of the response is null ,then deactivate parcels and stop processes.CM server use MySQL, and manage about 400 nodes. The logs of agent are following: [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO Matched request hashes. Not sending status [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO Sending heartbeat to master. [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO Received response from master: {u'last_request_hash': '', u'data_hash': '', u'ts_send': -1, u'data': {u'firehoses': [], u'rm_enabled': False, u'client_configs': [], u'create_parcel_symlinks': False, u'server_managed_parcels': [], u'extra_configs': None, u'host_collection_config_data': [], u'apply_parcel_users_groups_permissions': False, u'flood_torrent_port': 0, u'log_tailing_config': u'{}\n', u'active_parcels': {}, u'flood_rack_peers': None, u'retain_parcels_in_cache': True, u'processes': [], u'server_manages_parcels': False, u'heartbeat_interval': 15, u'parcels_directory': u'/opt/cloudera/parcels', u'host_id': u'724f1ab9-4f13-4dd7-a083-cd049d84b3d9', u'eventserver_host': None, u'enabled_metric_reporters': [], u'flood_seed_timeout': 0, u'eventserver_port': None}, u'ts_recv': -1} [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO Unmatched response hashes. Using and caching new response [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO call method handle_heartbeat_response [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO Begin Heartbeat Response handling [02/Aug/2017 19:29:47 +0000] 5488 MainThread parcel INFO Agent does not create users/groups and apply file permissions [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO active_parcels: {} [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO available_active_parcels: {} [02/Aug/2017 19:29:47 +0000] 5488 MainThread agent INFO old_available_active_parcels: {u'KAFKA': u'2.0.2-1.2.0.2.p0.5', u'CDH': u'5.7.2-1.cdh5.7.2.p0.18', u'PASCALICENSE': u'2.0.0-udap2.0.0', u'PASCA': u'2.0.0-udap2.0.0'}