Downgrade ES bulk item log message (#3954)

Downgrade logging of per bulk item failures from INFO to DEBUG. In worst case, every item in a bulk might fail, poluting the logs with loads of similar messages (one log messages per `bulk_max_size`).
elastic · Apr 7, 2017 · eedd8b0 · eedd8b0
1 parent 3f1c7c0
commit eedd8b0
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diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc
@@ -55,6 +55,7 @@ https://github.com/elastic/beats/compare/v5.1.1...master[Check the HEAD diff]
   filebeat.config_dir. {pull}3573[3573]
 - Fix empty registry file on machine crash. {issue}3537[3537]
 - Allow `-` in Apache access log byte count. {pull}3863[3863]
+- Downgrade Elasticsearch per batch item failure log to debug level. {issue}3953[3953]
 
 *Heartbeat*
 

diff --git a/libbeat/outputs/elasticsearch/client.go b/libbeat/outputs/elasticsearch/client.go
@@ -455,7 +455,7 @@ func bulkCollectPublishFails(
 			continue
 		}
 
-		logp.Info("Bulk item insert failed (i=%v, status=%v): %s", i, status, msg)
+		debugf("Bulk item insert failed (i=%v, status=%v): %s", i, status, msg)
 		failed = append(failed, data[i])
 	}