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Posted to dev@lucene.apache.org by "Varun Thacker (JIRA)" <ji...@apache.org> on 2018/05/11 15:35:00 UTC
[jira] [Created] (SOLR-12344) SolrSlf4jReporter doesn't set MDC
context
Varun Thacker created SOLR-12344:
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Summary: SolrSlf4jReporter doesn't set MDC context
Key: SOLR-12344
URL: https://issues.apache.org/jira/browse/SOLR-12344
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Reporter: Varun Thacker
I setup a slf4j reporter like this on mater
solr.xml
{code:java}
<metrics>
<reporter name="log_update_stats" group="core" class="org.apache.solr.metrics.reporters.SolrSlf4jReporter">
<int name="period">1</int>
<str name="filter">UPDATE./update.requestTimes</str>
<str name="logger">update_logger</str>
</reporter>
</metrics>{code}
log4j2.xml
{code:java}
<?xml version="1.0" encoding="UTF-8"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<Configuration>
<Appenders>
<Console name="STDOUT" target="SYSTEM_OUT">
<PatternLayout>
<Pattern>
%-4r [%t] %-5p %c %x [%X{collection} %X{shard} %X{replica} %X{core}] %c; %m%n
</Pattern>
</PatternLayout>
</Console>
<RollingFile
name="RollingFile"
fileName="${sys:solr.log.dir}/solr.log"
filePattern="${sys:solr.log.dir}/solr.log.%i" >
<PatternLayout>
<Pattern>
%-5p - %d{yyyy-MM-dd HH:mm:ss.SSS}; [%X{collection} %X{shard} %X{replica} %X{core}] %c; %m%n
</Pattern>
</PatternLayout>
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="32 MB"/>
</Policies>
<DefaultRolloverStrategy max="10"/>
</RollingFile>
<RollingFile
name="RollingMetricFile"
fileName="${sys:solr.log.dir}/solr_metric.log"
filePattern="${sys:solr.log.dir}/solr_metric.log.%i" >
<PatternLayout>
<Pattern>
%-5p - %d{yyyy-MM-dd HH:mm:ss.SSS}; [%X{collection} %X{shard} %X{replica} %X{core}] %c; %m%n
</Pattern>
</PatternLayout>
<Policies>
<OnStartupTriggeringPolicy />
<SizeBasedTriggeringPolicy size="32 MB"/>
</Policies>
<DefaultRolloverStrategy max="10"/>
</RollingFile>
</Appenders>
<Loggers>
<Logger name="org.apache.hadoop" level="warn"/>
<Logger name="org.apache.solr.update.LoggingInfoStream" level="off"/>
<Logger name="org.apache.zookeeper" level="warn"/>
<Logger name="update_logger" level="info" additivity="false">
<AppenderRef ref="RollingMetricFile"/>
</Logger>
<Root level="info">
<AppenderRef ref="RollingFile"/>
<AppenderRef ref="STDOUT"/>
</Root>
</Loggers>
</Configuration>
{code}
The output I get from the solr_metric.log file is like this
{code:java}
INFO - 2018-05-11 15:31:16.009; [ ] update_logger; type=TIMER, name=UPDATE./update.requestTimes, count=0, min=0.0, max=0.0, mean=0.0, stddev=0.0, median=0.0, p75=0.0, p95=0.0, p98=0.0, p99=0.0, p999=0.0, mean_rate=0.0, m1=0.0, m5=0.0, m15=0.0, rate_unit=events/second, duration_unit=milliseconds
INFO - 2018-05-11 15:31:17.010; [ ] update_logger; type=TIMER, name=UPDATE./update.requestTimes, count=0, min=0.0, max=0.0, mean=0.0, stddev=0.0, median=0.0, p75=0.0, p95=0.0, p98=0.0, p99=0.0, p999=0.0, mean_rate=0.0, m1=0.0, m5=0.0, m15=0.0, rate_unit=events/second, duration_unit=milliseconds
INFO - 2018-05-11 15:31:18.010; [ ] update_logger; type=TIMER, name=UPDATE./update.requestTimes, count=0, min=0.0, max=0.0, mean=0.0, stddev=0.0, median=0.0, p75=0.0, p95=0.0, p98=0.0, p99=0.0, p999=0.0, mean_rate=0.0, m1=0.0, m5=0.0, m15=0.0, rate_unit=events/second, duration_unit=milliseconds{code}
On a JVM which has multiple cores, this will become impossible to tell where it's coming from if MDC context is not set
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