[jira] [Updated] (NIFI-3205) Uncaught Failures Can Leave New Flow Files on Disk

["Alan Jackoway (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-3205?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Alan Jackoway updated NIFI-3205:
--------------------------------
    Summary: Uncaught Failures Can Leave New Flow Files on Disk  (was: Failures Can Leave New Flow Files on Disk)

> Uncaught Failures Can Leave New Flow Files on Disk
> --------------------------------------------------
>
>                 Key: NIFI-3205
>                 URL: https://issues.apache.org/jira/browse/NIFI-3205
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Alan Jackoway
>
> We have been hitting a situation where our content repository quickly fills the entire disk despite having archiving off and close to nothing queued.
> We believe this problem happens more often when a processor that creates many flow files fails in the middle.
> I then created this test script and deployed it on a new nifi with a 100KB GenerateFlowFile in front of it. The script makes 5 copies of the incoming flow file, then does session.remove on those copies, then throws a RuntimeException. However, the content repository grows 500KB every time it runs. Then when you restart nifi, it cleans up the content repository with messages like this:
> {noformat}
> 2016-12-15 11:17:29,774 INFO [main] o.a.n.c.repository.FileSystemRepository Found unknown file /Users/alanj/nifi-1.1.0/content_repository/1/1481818525279-1 (1126400 bytes) in File System Repository; archiving file
> 2016-12-15 11:17:29,778 INFO [main] o.a.n.c.repository.FileSystemRepository Found unknown file /Users/alanj/nifi-1.1.0/content_repository/2/1481818585493-2 (409600 bytes) in File System Repository; archiving file
> {noformat}
> The test processor is the following:
> {code:java}
> // Copyright 2016 (c) Cloudera
> package com.cloudera.edh.nifi.processors.bundles;
> import com.google.common.collect.Lists;
> import java.io.IOException;
> import java.io.InputStream;
> import java.io.OutputStream;
> import java.util.List;
> import org.apache.nifi.annotation.behavior.InputRequirement;
> import org.apache.nifi.annotation.behavior.InputRequirement.Requirement;
> import org.apache.nifi.flowfile.FlowFile;
> import org.apache.nifi.processor.AbstractProcessor;
> import org.apache.nifi.processor.ProcessContext;
> import org.apache.nifi.processor.ProcessSession;
> import org.apache.nifi.processor.exception.ProcessException;
> import org.apache.nifi.processor.io.InputStreamCallback;
> import org.apache.nifi.processor.io.OutputStreamCallback;
> import org.apache.nifi.stream.io.StreamUtils;
> /**
>  * Makes 5 copies of an incoming file, then fails and rolls back.
>  */
> @InputRequirement(value = Requirement.INPUT_REQUIRED)
> public class CopyAndFail extends AbstractProcessor {
>   @Override
>   public void onTrigger(ProcessContext context, ProcessSession session)
>       throws ProcessException {
>     FlowFile inputFile = session.get();
>     if (inputFile == null) {
>       context.yield();
>       return;
>     }
>     final List<FlowFile> newFiles = Lists.newArrayList();
>     
>     // Copy the file 5 times (simulates us opening a zip file and unpacking its contents)
>     for (int i = 0; i < 5; i++) {
>       session.read(inputFile, new InputStreamCallback() {
>         @Override
>         public void process(InputStream inputStream) throws IOException {
>           FlowFile ff = session.create(inputFile);
>           ff = session.write(ff, new OutputStreamCallback() {
>             @Override
>             public void process(final OutputStream out) throws IOException {
>               StreamUtils.copy(inputStream, out);
>             }
>           });
>           newFiles.add(ff);
>         }
>       });
>     }
>     
>     getLogger().warn("Removing the new files");
>     System.err.println("Removing the new files");
>     session.remove(newFiles);
>     
>     // Simulate an error handling some file in the zip after unpacking the rest
>     throw new RuntimeException();
>   }
> }
> {code}



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