Michael Moser created NIFI-1746: ----------------------------------- Summary: NiFi will not start when 'conf' directory is a symbolic link Key: NIFI-1746 URL: https://issues.apache.org/jira/browse/NIFI-1746 Project: Apache NiFi Issue Type: Bug Components: Core Framework Affects Versions: 0.6.0 Reporter: Michael Moser Assignee: Michael Moser Priority: Trivial
Yes this case is probably rare, but people try many things to make upgrading NiFi easier for themselves. When the directory containing the flow.xml.gz (nifi.properties nifi.flow.configuration.file=./conf/flow.xml.gz) is actually a symbolic link to another directory AND the flow.xml.gz doesn't yet exist in that directory, then NiFi throws an exception and fails to start. 2016-04-08 13:14:54,239 WARN [main] org.eclipse.jetty.webapp.WebAppContext Failed startup of context o.e.j.w.WebAppContext@a407e8f{/ nifi-api,file:/local/mosermw/nifi-0.6.1/work/jetty/nifi-web-api-0.6.1.war/webapp/,STARTING}{./work/nar/framework/nifi-framework-nar- 0.6.1.nar-unpacked/META-INF/bundled-dependencies/nifi-web-api-0.6.1.war} org.apache.nifi.web.NiFiCoreException: Unable to start Flow Controller. ... Caused by: java.nio.file.FileAlreadyExistsException: ./conf at sun.nio.fs.UnixException.translateToIOException(UnixException.java:88) ~[na:1.7.0_80] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102) ~[na:1.7.0_80] at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107) ~[na:1.7.0_80] at sun.nio.fs.UnixFileSystemProvider.createDirectory(UnixFileSystemProvider.java:383) ~[na:1.7.0_80] at java.nio.file.Files.createDirectory(Files.java:630) ~[na:1.7.0_80] at java.nio.file.Files.createAndCheckIsDirectory(Files.java:734) ~[na:1.7.0_80] at java.nio.file.Files.createDirectories(Files.java:683) ~[na:1.7.0_80] at org.apache.nifi.persistence.StandardXMLFlowConfigurationDAO.<init>(StandardXMLFlowConfigurationDAO.java:56) ~[nifi-framew ork-core-0.6.1.jar:0.6.1] at org.apache.nifi.controller.StandardFlowService.<init>(StandardFlowService.java:167) ~[nifi-framework-core-0.6.1.jar:0.6.1 ] at org.apache.nifi.controller.StandardFlowService.createStandaloneInstance(StandardFlowService.java:131) ~[nifi-framework-co re-0.6.1.jar:0.6.1] at org.apache.nifi.spring.StandardFlowServiceFactoryBean.getObject(StandardFlowServiceFactoryBean.java:63) ~[nifi-framework- core-0.6.1.jar:0.6.1] -- This message was sent by Atlassian JIRA (v6.3.4#6332)