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Remove dead leniency in allow rebalance setting use (#47259) 

This commit removes some leniency that exists in getting the allow
rebalance setting. Fortunately, that leniency is dead code, this can
never happen. The reason this can never happen is because the settings
infrastructure will not allow setting an invalid value for this
setting. If you try to set this in the elasticsearch.yml, then the node
will fail to start, since parsing the setting will fail. If you try to
set this via an update settings API call, then parsing the setting will
fail and the settings update will be rejected. Therefore, this leniency
can never be activated, so we remove it.

This commit is the first of a few in an attempt to remove the public
uses of Setting#getRaw.
This commit is contained in:
Jason Tedor 2019-09-28 08:04:36 -04:00
parent ab871add36
commit bd603b0a7b
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1 changed files with 1 additions and 9 deletions
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10
server/src/main/java/org/elasticsearch/cluster/routing/allocation/decider/ClusterRebalanceAllocationDecider.java
View File

@ -95,16 +95,8 @@ public class ClusterRebalanceAllocationDecider extends AllocationDecider {
private volatile ClusterRebalanceType type;
public ClusterRebalanceAllocationDecider(Settings settings, ClusterSettings clusterSettings) {
try {
type = CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.get(settings);
} catch (IllegalStateException e) {
logger.warn("[{}] has a wrong value {}, defaulting to 'indices_all_active'",
CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING,
CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.getRaw(settings));
type = ClusterRebalanceType.INDICES_ALL_ACTIVE;
}
type = CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING.get(settings);
logger.debug("using [{}] with [{}]", CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE, type);
clusterSettings.addSettingsUpdateConsumer(CLUSTER_ROUTING_ALLOCATION_ALLOW_REBALANCE_SETTING, this::setType);
}