[SOLR-9854] Collect metrics for index merges and index store IO

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 6.4, 7.0
• Fix Version/s: 6.4, 7.0
• Component/s: metrics
• Security Level: Public (Default Security Level. Issues are Public)
• Assignee: Andrzej Bialecki
• Reporter: Andrzej Bialecki
• Created: 12/Dec/16 17:17
• Updated: 28/Apr/17 15:52
• Resolved: 03/Jan/17 14:33

Description

Using API for metrics management developed in SOLR-4735 we should also start collecting metrics for major aspects of IndexWriter operation, such as read / write IO rates, number of minor and major merges and IO during these operations, etc.

This will provide a better insight into resource consumption and load at the IO level.

Issue Links

• breaks: SOLR-10130 Serious performance degradation in Solr 6.4.1 due to the new metrics collection
• is duplicated by: SOLR-1550 statistics for request handlers should report std dev
• is required by: SOLR-9857 Collect aggregated metrics from replicas in shard leader
• requires: SOLR-4735 Improve Solr metrics reporting