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repair: resolve load_history shard load skew

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Using uuid_xor_to_uint32 instance of table_uuid's most_significant_bits,
optimize the hash conflict to shard.
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xuchang
2024-01-29 09:44:57 +08:00
parent ae422fdf69
commit 9b675d1fe4
1 changed files with 1 additions and 1 deletions
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repair/row_level.cc
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@@ -3230,7 +3230,7 @@ future<> repair_service::cleanup_history(tasks::task_id repair_id) {
future<> repair_service::load_history() {
co_await get_db().local().get_tables_metadata().parallel_for_each_table(coroutine::lambda([&] (table_id table_uuid, lw_shared_ptr<replica::table> table) -> future<> {
auto shard = unsigned(table_uuid.uuid().get_most_significant_bits()) % smp::count;
auto shard = utils::uuid_xor_to_uint32(table_uuid.uuid()) % smp::count;
if (shard != this_shard_id()) {
co_return;
}