Temporarily set experimental_mempurge_threshold=0 in crash test (#8958)
Summary: For now, disable it since the below command indicates it can cause a failure. Running that command with `-experimental_mempurge_threshold=0` has been running successfully for several minutes, whereas before it failed in seconds. ``` $ while rm -rf /dev/shm/single_stress && ./db_stress --clear_column_family_one_in=0 --column_families=1 --db=/dev/shm/single_stress --experimental_mempurge_threshold=5.493146827397074 --flush_one_in=10000 --reopen=0 --write_buffer_size=262144 --value_size_mult=33 --max_write_buffer_number=3 -ops_per_thread=10000; do : ; done ``` Pull Request resolved: https://github.com/facebook/rocksdb/pull/8958 Reviewed By: ltamasi Differential Revision: D31187059 Pulled By: ajkr fbshipit-source-id: 04d5bfb4fcc4f5b66233e691427dfd940c67037f
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@ -222,7 +222,10 @@ whitebox_default_params = {
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simple_default_params = {
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simple_default_params = {
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"allow_concurrent_memtable_write": lambda: random.randint(0, 1),
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"allow_concurrent_memtable_write": lambda: random.randint(0, 1),
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"column_families": 1,
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"column_families": 1,
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"experimental_mempurge_threshold": lambda: 10.0*random.random(),
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# TODO: re-enable once below loop succeeds for a while (a few minutes should
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# suffice):
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# `while rm -rf /dev/shm/single_stress && ./db_stress --clear_column_family_one_in=0 --column_families=1 --db=/dev/shm/single_stress --experimental_mempurge_threshold=5.493146827397074 --flush_one_in=10000 --reopen=0 --write_buffer_size=262144 --value_size_mult=33 --max_write_buffer_number=3 -ops_per_thread=10000; do : ; done`
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"experimental_mempurge_threshold": 0,
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"max_background_compactions": 1,
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"max_background_compactions": 1,
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"max_bytes_for_level_base": 67108864,
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"max_bytes_for_level_base": 67108864,
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"memtablerep": "skip_list",
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"memtablerep": "skip_list",
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