I had similar issue today, where Nifi server was up, but UI kept spinning.  I did clear browser cache and restarted the server, and browser.  The UI came back fine.  Just mentioning it for others, who may have similar issue,  ... View more

@Abhinav Phutela Thank's for your suggestion, it's worked fine for me ... View more

@Sandeep Kumar I'm heaving the same issue with zookeeper being stopped a few seconds after startup. My problem though is that it seems the changes made to log4j properties through Ambari are not getting propagated. Here the "Advanced zookeeper log4j": # DEFAULT: console appender only #log4j.rootLogger=INFO, CONSOLE, ROLLINGFILE # Example with rolling log file log4j.rootLogger=DEBUG, CONSOLE, ROLLINGFILE # Example with rolling log file and tracing #log4j.rootLogger=TRACE, CONSOLE, ROLLINGFILE, TRACEFILE # # Log INFO level and above messages to the console # log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender log4j.appender.CONSOLE.Threshold=INFO log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} - %-5p [%t:%C{1}@%L] - %m%n # # Add ROLLINGFILE to rootLogger to get log file output # Log DEBUG level and above messages to a log file log4j.appender.ROLLINGFILE=org.apache.log4j.RollingFileAppender log4j.appender.ROLLINGFILE.Threshold=DEBUG log4j.appender.ROLLINGFILE.File={{zk_log_dir}}/zookeeper.log # Max log file size of 10MB log4j.appender.ROLLINGFILE.MaxFileSize={{zookeeper_log_max_backup_size}}MB # uncomment the next line to limit number of backup files #log4j.appender.ROLLINGFILE.MaxBackupIndex={{zookeeper_log_number_of_backup_files}} log4j.appender.ROLLINGFILE.layout=org.apache.log4j.PatternLayout log4j.appender.ROLLINGFILE.layout.ConversionPattern=%d{ISO8601} - %-5p [%t:%C{1}@%L] - %m%n # # Add TRACEFILE to rootLogger to get log file output # Log DEBUG level and above messages to a log file log4j.appender.TRACEFILE=org.apache.log4j.FileAppender log4j.appender.TRACEFILE.Threshold=TRACE log4j.appender.TRACEFILE.File=zookeeper_trace.log log4j.appender.TRACEFILE.layout=org.apache.log4j.PatternLayout ### Notice we are including log4j's NDC here (%x) log4j.appender.TRACEFILE.layout.ConversionPattern=%d{ISO8601} - %-5p [%t:%C{1}@%L][%x] - %m%n But yet ps -ef | grpe zookeper: zookeep+ 18598 1 4 23:49 ? 00:00:00 /usr/jdk64/jdk1.8.0_112/bin/java -Dzookeeper.log.dir=/xxx/zk/logs -Dzookeeper.log.file=zookeeper-zookeeper-server-xxxxxxxxxxx.log -Dzookeeper.root.logger=INFO,ROLLINGFILE ..... Note that neither DEBUG, nor new log file name (zookeeper.log) have not been propagated by ambari Is there any property missing? Thanks, Alex ... View more

Works great ! Thanks. ... View more