[HADOOP-14307] GraphiteSink can specify which tags to export into the metrics prefix

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.7.0, 2.7.1, 2.7.2, 2.7.3
• Fix Version/s: 2.7.0, 2.7.1, 2.7.2, 2.7.3
• Component/s: metrics
• Target Version/s: 2.7.8
• Flags: Patch
• Assignee: Damien Claveau
• Reporter: Damien Claveau
• Created: 14/Apr/17 08:25
• Updated: 02/Jun/18 17:38

Description

This Jira is a feature proposal to add the ability in GraphiteSink to specify which Tag (Name/Value) pairs are to be flattened in the metric prefix.

The motivation for this is that currently, all the tags are included in the prefix like this : graphite_prefix.Context=$context.Process=$process.Tag1=$value1.Tag2=$value2..Tag9=$value9.metric

This requires a bunch of rewriting rules (and complex regexp) in the metric aggregation servers (carbon-relay, carbon-aggregator, ...) .

The feature would be exactly the same as the solution implemented in the GangliaSink : https://issues.apache.org/jira/browse/HADOOP-7507
See also the commit : https://github.com/apache/hadoop/commit/2ca9c8d926a8eeb871b2868e6eb4dfb97d7dc63d