Hello, Community: I am using Solr7.4.1 which uses log4j (version 2.11) as one of the components. Like below, some of the log files that Solr generated contain <0x00> (null characters) in the near end of the files.
2019-10-20 06:02:03.643 INFO (coreCloseExecutor-140-thread-4) [ x:corename] o.a.s.m.SolrMetricManager Closing metric reporters for registry=solr.core.corename, tag=4c16<0x00><0x00><0x00><0x00>.......<0x00><0x00>00ff 2019-10-20 06:02:03.643 INFO (coreCloseExecutor-140-thread-4) [ x:corename] o.a.s.m.r.SolrJmxReporter Closing reporter [org.apache.solr.metrics.reporters.SolrJmxReporter@17281659: rootName = null, domain = solr.core.corename, service url = null, agent id = null] for registry solr.core.corename/ com.codahale.metrics.MetricRegistry@6c9f45cc<0x00><0x00><0x00><0x00>......(continue printing <0x00> untill the end of file.) The problem is, because of this incident, I could not trace what happened to my Solr. Does anyone have the same issue before? If anyone knows a way to fix this issue, Could you please let me know? Any clue will be very appreciated. Sincerely, Kaya Ota