ElasticsearchEvent: Unable to serialize to JSON

[soyacz]

In perf tests run from master we recently started to get errors like:

2025-03-31 20:16:19.509: (ElasticsearchEvent Severity.ERROR) period_type=one-time event_id=13b319c1-a30e-4020-b255-484c0624c702: doc_id=8d177631-46b8-465a-b945-714f961d256a error=Unable to serialize to JSON: {'doc': {'results': {'throughput': {}, 'latency_read_99': {}, 'latency_write_99': {}, 'stats': [{'loader_idx': '1', 'cpu_idx': '0', 'keyspace_idx': '1', 'op rate': '6000', 'latency mean': '1.3', 'latency median': '1.3', 'latency 95th percentile': '2.2', 'latency 99th percentile': '2.4', 'latency 99.9th percentile': '3.2', 'latency max': '17.4', 'total operations': '10800338', 'total errors': '0', 'total operation time': '00:30:00'}, (<sdcm.cluster_aws.AWSNode object at 0x78a18a4d2530>, None, <sdcm.sct_events.loaders.CqlStressCassandraStressEvent object at 0x78a1849e08e0>)], 'stats_average': {'op rate': '', 'latency mean': '', 'latency 99th percentile': ''}, 'stats_total': {'op rate': '', 'Total errors': ''}}}} (type: dict)

Example run: https://argus.scylladb.com/tests/scylla-cluster-tests/8d177631-46b8-465a-b945-714f961d256a

[fruch]

seems like we are passing the nodes object straight in, without converting them to strings

[fruch]

I think there a missing _parse_stress_summary for cql stress

@dimakr, can you look into it ?

seem like it's the last refactor, and by default we return the objects which can be converted to json

[dimakr]

Fixed by d35aefc