Files
Alistair Coles
18f20daf38
Add absolute values for shard shrinking config options
Add two new sharder config options for configuring shrinking behaviour: - shrink_threshold: the size below which a shard may shrink - expansion_limit: the maximum size to which an acceptor shard may grow The new options match the 'swift-manage-shard-ranges' command line options and take absolute values. The new options provide alternatives to the current equivalent options 'shard_shrink_point' and 'shard_shrink_merge_point', which are expressed as percentages of 'shard_container_threshold'. 'shard_shrink_point' and 'shard_shrink_merge_point' are deprecated and will be overridden by the new options if the new options are explicitly set in a config file. The default values of the new options are the same as the values that would result from the default 'shard_container_threshold', 'shard_shrink_point' and 'shard_shrink_merge_point' i.e.: - shrink_threshold: 100000 - expansion_limit: 750000 Change-Id: I087eac961c1eab53540fe56be4881e01ded1f60e