Github user alopresto commented on the issue:
https://github.com/apache/nifi/pull/2086
I verified the new unit test passed successfully. I then started the app
normally, ran a heavy flow, and debugged at the `checkpoint()` method to ensure
I captured a valid `snapshot` file. I modified this by truncating the file
after a transaction ID, yielding an incomplete record. I stopped the
application, moved the modified `snapshot` into place, and restarted the app.
On loading, NiFi stopped with the following expected error in the
`nifi-app.log`:
```
org.apache.nifi.web.NiFiCoreException: Unable to start Flow Controller.
at
org.apache.nifi.web.contextlistener.ApplicationStartupContextListener.contextInitialized(ApplicationStartupContextListener.java:88)
at
org.eclipse.jetty.server.handler.ContextHandler.callContextInitialized(ContextHandler.java:876)
at
org.eclipse.jetty.servlet.ServletContextHandler.callContextInitialized(ServletContextHandler.java:532)
at
org.eclipse.jetty.server.handler.ContextHandler.startContext(ContextHandler.java:839)
at
org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:344)
at
org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1480)
at
org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1442)
at
org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:799)
at
org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:261)
at
org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:540)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:113)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
at
org.eclipse.jetty.server.handler.gzip.GzipHandler.doStart(GzipHandler.java:290)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:131)
at org.eclipse.jetty.server.Server.start(Server.java:452)
at
org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:105)
at
org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:113)
at org.eclipse.jetty.server.Server.doStart(Server.java:419)
at
org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:68)
at org.apache.nifi.web.server.JettyServer.start(JettyServer.java:707)
at org.apache.nifi.NiFi.<init>(NiFi.java:160)
at org.apache.nifi.NiFi.main(NiFi.java:268)
Caused by: java.io.EOFException: Failed to read field 'Repository Record
Update'
at
org.apache.nifi.repository.schema.SchemaRecordReader.readField(SchemaRecordReader.java:115)
at
org.apache.nifi.repository.schema.SchemaRecordReader.readRecord(SchemaRecordReader.java:72)
at
org.apache.nifi.controller.repository.SchemaRepositoryRecordSerde.deserializeRecord(SchemaRepositoryRecordSerde.java:124)
at
org.apache.nifi.controller.repository.SchemaRepositoryRecordSerde.deserializeRecord(SchemaRepositoryRecordSerde.java:46)
at
org.wali.MinimalLockingWriteAheadLog.recoverFromSnapshot(MinimalLockingWriteAheadLog.java:380)
at
org.wali.MinimalLockingWriteAheadLog.recoverRecords(MinimalLockingWriteAheadLog.java:300)
at
org.apache.nifi.controller.repository.WriteAheadFlowFileRepository.loadFlowFiles(WriteAheadFlowFileRepository.java:381)
at
org.apache.nifi.controller.FlowController.initializeFlow(FlowController.java:723)
at
org.apache.nifi.controller.StandardFlowService.initializeController(StandardFlowService.java:956)
at
org.apache.nifi.controller.StandardFlowService.load(StandardFlowService.java:535)
at
org.apache.nifi.web.contextlistener.ApplicationStartupContextListener.contextInitialized(ApplicationStartupContextListener.java:72)
... 28 common frames omitted
Suppressed: java.io.EOFException: Failed to read field 'Create or
Update'
at
org.apache.nifi.repository.schema.SchemaRecordReader.readField(SchemaRecordReader.java:115)
at
org.apache.nifi.repository.schema.SchemaRecordReader.readFieldValue(SchemaRecordReader.java:186)
at
org.apache.nifi.repository.schema.SchemaRecordReader.readField(SchemaRecordReader.java:113)
... 38 common frames omitted
Suppressed: java.io.EOFException: Unexpected End-of-File when
attempting to read Repetition value for field 'Swap Location'
at
org.apache.nifi.repository.schema.SchemaRecordReader.readField(SchemaRecordReader.java:101)
at
org.apache.nifi.repository.schema.SchemaRecordReader.readFieldValue(SchemaRecordReader.java:171)
at
org.apache.nifi.repository.schema.SchemaRecordReader.readField(SchemaRecordReader.java:113)
... 40 common frames omitted
```
Ran `contrib-check` and all tests pass. +1, merging.
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