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https://github.com/scylladb/scylladb.git
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5eaa979f35
Add a test that reproduces SCYLLADB-1629: set_smp() had no effect because nodelist() created new ScyllaNode objects on every call, losing the _smp_set_during_test value. The test fails without the fix in the previous patch.
47 lines
1.5 KiB
Python
47 lines
1.5 KiB
Python
#
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# Copyright (C) 2026-present ScyllaDB
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#
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# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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#
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import logging
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import pytest
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from dtest_class import Tester
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logger = logging.getLogger(__file__)
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@pytest.mark.single_node
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class TestSetSmp(Tester):
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"""Test that node.set_smp() properly persists across restarts."""
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def _get_smp_from_log(self, node, from_mark=None):
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"""Extract smp value from the node's log by looking at the SHARD_COUNT gossip value."""
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matches = node.grep_log(r"SHARD_COUNT : Value\((\d+),\d+\)", from_mark=from_mark)
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assert matches, "Could not find SHARD_COUNT in node log"
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# Return the last match (most recent start)
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return int(matches[-1][1].group(1))
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def test_set_smp(self):
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"""Verify that set_smp() takes effect on the next start."""
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cluster = self.cluster
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cluster.populate(1).start(wait_for_binary_proto=True)
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node1 = cluster.nodelist()[0]
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default_smp = self._get_smp_from_log(node1)
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cluster.stop()
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# set_smp to a different value and restart without jvm_args
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target_smp = 1 if default_smp != 1 else 2
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node1.set_smp(target_smp)
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mark = node1.mark_log()
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cluster.start(wait_for_binary_proto=True)
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node1 = cluster.nodelist()[0]
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actual_smp = self._get_smp_from_log(node1, from_mark=mark)
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assert actual_smp == target_smp, \
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f"Expected smp={target_smp} after set_smp({target_smp}), got {actual_smp}"
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