nodetool reloadtriggers

Reloads trigger classes.

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Synopsis

nodetool [connection_options] reloadtriggers

Description

nodetool reloadtriggers reloads custom trigger classes from the triggers directory without requiring a node restart. Triggers are custom code that executes on mutations.

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Examples

Basic Usage

nodetool reloadtriggers

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When to Use

After Updating Trigger JARs

# 1. Copy new trigger JAR to triggers directory
cp my_trigger.jar /etc/cassandra/triggers/

# 2. Reload triggers
nodetool reloadtriggers

After Removing Triggers

# 1. Remove trigger JAR
rm /etc/cassandra/triggers/old_trigger.jar

# 2. Reload
nodetool reloadtriggers

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Trigger Directory

Default location:

/etc/cassandra/triggers/

Or configured in cassandra.yaml.

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Best Practices

Guidelines

1. Test triggers - Test in non-production first
2. Cluster-wide - Update and reload on all nodes
3. Version control - Track trigger code changes

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Related Commands

Command	Relationship
reloadlocalschema	Reload schema
reloadssl	Reload SSL certificates