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https://issues.apache.org/jira/browse/HIVE-15050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexandre Linte resolved HIVE-15050.
------------------------------------
Resolution: Fixed
> Webhcat fails to start with Syslog appender
> -------------------------------------------
>
> Key: HIVE-15050
> URL: https://issues.apache.org/jira/browse/HIVE-15050
> Project: Hive
> Issue Type: Bug
> Components: WebHCat
> Affects Versions: 2.1.0
> Environment: Hive 2.1.0, Hadoop 2.7.2
> Reporter: Alexandre Linte
>
> WebHCat fails to start if SyslogAppender is set instead of a more
> conventional FileAppender or DailyRollingFileAppender. However, Hive itself
> can work with a syslog appender.
> The error displayed when the webhcat service is killed is:
> {noformat}
> 2016-10-25 09:45:29,538 main ERROR Unable to write to stream
> UDP:127.0.0.1:514 for appender SYSLOG
> 2016-10-25 09:45:29,540 main ERROR An exception occurred processing Appender
> SYSLOG org.apache.logging.log4j.core.appender.AppenderLoggingException: Error
> flushing stream UDP:127.0.0.1:514
> at
> org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:159)
> at
> org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append(AbstractOutputStreamAppender.java:107)
> at
> org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:152)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:125)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:116)
> at
> org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:390)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:378)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:362)
> at
> org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:352)
> at
> org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:63)
> at org.apache.logging.log4j.core.Logger.logMessage(Logger.java:143)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:1016)
> at
> org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:964)
> at org.apache.logging.slf4j.Log4jLogger.info(Log4jLogger.java:178)
> at
> org.apache.hive.hcatalog.templeton.AppConfig.init(AppConfig.java:197)
> at
> org.apache.hive.hcatalog.templeton.AppConfig.<init>(AppConfig.java:176)
> at org.apache.hive.hcatalog.templeton.Main.loadConfig(Main.java:101)
> at org.apache.hive.hcatalog.templeton.Main.init(Main.java:85)
> at org.apache.hive.hcatalog.templeton.Main.<init>(Main.java:80)
> at org.apache.hive.hcatalog.templeton.Main.main(Main.java:305)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> Caused by: java.io.IOException: Message too long
> at java.net.PlainDatagramSocketImpl.send(Native Method)
> at java.net.DatagramSocket.send(DatagramSocket.java:698)
> at
> org.apache.logging.log4j.core.net.DatagramOutputStream.flush(DatagramOutputStream.java:103)
> at
> org.apache.logging.log4j.core.appender.OutputStreamManager.flush(OutputStreamManager.java:156)
> ... 26 more
> {noformat}
> The syslog appender configuration used here is:
> {noformat}
> status = INFO
> name = WebhcatLog4j2
> packages = org.apache.hadoop.hive.ql.log
> # list of properties
> property.webhcat.log.level = INFO
> property.webhcat.root.logger = SYSLOG
> #property.webhcat.log.dir = .
> #property.webhcat.log.file = webhcat.log
> # console appender
> appender.console.type = Console
> appender.console.name = console
> appender.console.target = SYSTEM_ERR
> appender.console.layout.type = PatternLayout
> appender.console.layout.pattern = %d{yy/MM/dd HH:mm:ss} [%t]: %p %c{2}: %m%n
> # syslog appender
> appender.SYSLOG.type = Syslog
> appender.SYSLOG.name = SYSLOG
> appender.SYSLOG.host = 127.0.0.1
> appender.SYSLOG.port = 514
> appender.SYSLOG.protocol = UDP
> appender.SYSLOG.facility = LOCAL1
> # list of all loggers
> loggers = Jersey, WebComponent, Hadoop, HadoopConf, Zookeeper, Jetty
> logger.Jersey.name = com.sun.jersey
> logger.Jersey.level = DEBUG
> logger.WebComponent.name = com.sun.jersey.spi.container.servlet.WebComponent
> logger.WebComponent.level = ERROR
> logger.Hadoop.name = org.apache.hadoop
> logger.Hadoop.level = INFO
> logger.HadoopConf.name = org.apache.hadoop.conf
> logger.HadoopConf.level = WARN
> logger.Zookeeper.name = org.apache.zookeeper
> logger.Zookeeper.level = WARN
> logger.Jetty.name = org.eclipse.jetty
> logger.Jetty.level = INFO
> # root logger
> rootLogger.level = ${sys:webhcat.log.level}
> rootLogger.appenderRefs = root
> rootLogger.appenderRef.root.ref = ${sys:webhcat.root.logger}
> {noformat}
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