Benny Halevy 1a183047c0 utils: config_src: add set_value_on_all_shards functions ...

Currently when we set a single value we need
to call broadcast_to_all_shards to let observers on all
shards get notified of the new value.

However, the latter broadcasts all value to all shards
so it's terribly inefficient.

Instead, add async set_value_on_all_shards functions
to broadcast a value to all shards.

Use those in system_keyspace for db_config_table virtual table
and in task_manager_test to update the task_manager ttl.

Refs #7316

Signed-off-by: Benny Halevy <bhalevy@scylladb.com>

2022-11-09 11:55:14 +02:00

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