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Posted to issues@flink.apache.org by "Chesnay Schepler (JIRA)" <ji...@apache.org> on 2017/05/22 17:22:04 UTC
[jira] [Closed] (FLINK-6663) NPE on web startup when disabling web
submissions
[ https://issues.apache.org/jira/browse/FLINK-6663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chesnay Schepler closed FLINK-6663.
-----------------------------------
Resolution: Duplicate
> NPE on web startup when disabling web submissions
> -------------------------------------------------
>
> Key: FLINK-6663
> URL: https://issues.apache.org/jira/browse/FLINK-6663
> Project: Flink
> Issue Type: Bug
> Components: Webfrontend
> Affects Versions: 1.3.0
> Reporter: Jared Stehler
>
> The web frontend fails to start when I disable web submissions, with a null pointer for upload dir:
> {noformat}
> 2017-05-22 16:56:42.818 [main] ERROR org.apache.flink.runtime.webmonitor.WebMonitorUtils - WebServer could not be created
> java.lang.NullPointerException: null
> at org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:58)
> at org.apache.flink.runtime.webmonitor.utils.WebFrontendBootstrap.<init>(WebFrontendBootstrap.java:65)
> at org.apache.flink.runtime.webmonitor.WebRuntimeMonitor.<init>(WebRuntimeMonitor.java:385)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at org.apache.flink.runtime.webmonitor.WebMonitorUtils.startWebRuntimeMonitor(WebMonitorUtils.java:140)
> at org.apache.flink.runtime.clusterframework.BootstrapTools.startWebMonitorIfConfigured(BootstrapTools.java:195)
> at org.apache.flink.mesos.runtime.clusterframework.MesosApplicationMasterRunner.runPrivileged(MesosApplicationMasterRunner.java:325)
> at org.apache.flink.mesos.runtime.clusterframework.MesosApplicationMasterRunner$1.call(MesosApplicationMasterRunner.java:181)
> at org.apache.flink.mesos.runtime.clusterframework.MesosApplicationMasterRunner$1.call(MesosApplicationMasterRunner.java:178)
> at org.apache.flink.runtime.security.HadoopSecurityContext$1.run(HadoopSecurityContext.java:43)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
> at org.apache.flink.runtime.security.HadoopSecurityContext.runSecured(HadoopSecurityContext.java:40)
> at org.apache.flink.mesos.runtime.clusterframework.MesosApplicationMasterRunner.run(MesosApplicationMasterRunner.java:178)
> at org.apache.flink.mesos.runtime.clusterframework.MesosApplicationMasterRunner.main(MesosApplicationMasterRunner.java:139)
> {noformat}
> This seems to be due to the code explicitly setting it to null?
> {code:java}
> final boolean webSubmitAllow = cfg.isProgramSubmitEnabled();
> if (webSubmitAllow) {
> // create storage for uploads
> this.uploadDir = getUploadDir(config);
> // the upload directory should either 1. exist and writable or 2. can be created and writable
> if (!(uploadDir.exists() && uploadDir.canWrite()) && !(uploadDir.mkdir() && uploadDir.canWrite())) {
> throw new IOException(
> String.format("Jar upload directory %s cannot be created or is not writable.",
> uploadDir.getAbsolutePath()));
> }
> LOG.info("Using directory {} for web frontend JAR file uploads", uploadDir);
> }
> else {
> this.uploadDir = null;
> }
> {code}
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