[KNOX-784] java.lang.IllegalArgumentException: A metric named org.apache.http.conn.HttpClientConnectionManager.available-connections already exists

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Unassigned
• Reporter: Nishant Bangarwa
• Created: 11/Nov/16 10:54
• Updated: 25/Mar/19 15:31

Description

Facing this error on latest trunk version -

Caused by: java.lang.IllegalArgumentException: A metric named org.apache.http.conn.HttpClientConnectionManager.available-connections already exists
at com.codahale.metrics.MetricRegistry.register(MetricRegistry.java:91)
at com.codahale.metrics.httpclient.InstrumentedHttpClientConnectionManager.<init>(InstrumentedHttpClientConnectionManager.java:63)
at com.codahale.metrics.httpclient.InstrumentedHttpClientConnectionManager.<init>(InstrumentedHttpClientConnectionManager.java:49)
at com.codahale.metrics.httpclient.InstrumentedHttpClientConnectionManager.<init>(InstrumentedHttpClientConnectionManager.java:41)
at com.codahale.metrics.httpclient.InstrumentedHttpClientConnectionManager.<init>(InstrumentedHttpClientConnectionManager.java:36)
at org.apache.hadoop.gateway.services.metrics.impl.instr.InstrHttpClientBuilderProvider.getInstrumented(InstrHttpClientBuilderProvider.java:41)
at org.apache.hadoop.gateway.services.metrics.impl.instr.InstrHttpClientBuilderProvider.getInstrumented(InstrHttpClientBuilderProvider.java:36)
at org.apache.hadoop.gateway.services.metrics.impl.DefaultMetricsService.getInstrumented(DefaultMetricsService.java:128)
at org.apache.hadoop.gateway.dispatch.DefaultHttpClientFactory.createHttpClient(DefaultHttpClientFactory.java:67)
at org.apache.hadoop.gateway.dispatch.GatewayDispatchFilter.init(GatewayDispatchFilter.java:75)
at org.apache.hadoop.gateway.GatewayFilter$Holder.getInstance(GatewayFilter.java:362)

Issue Links

• is broken by: KNOX-643 Add the ability to gather and expose metrics in the gateway
• is related to: KNOX-921 Httpclient max connections are always set to default values