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https://issues.apache.org/jira/browse/NIFI-2818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15658008#comment-15658008
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Joseph Witt commented on NIFI-2818:
-----------------------------------
ok am +1. I made a small change to the existsRead method to reflect exactly
what the logic of existsReadWrite had. This addressed a gap in the case where
if the directory did not exist. Tested startup with lib having only read and
it now works just fine. Merged to master. thanks!
> NIFI requires write access to NIFI_HOME/lib upon start
> ------------------------------------------------------
>
> Key: NIFI-2818
> URL: https://issues.apache.org/jira/browse/NIFI-2818
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.0.0, 0.7.0
> Reporter: Andre
> Assignee: Joseph Witt
> Fix For: 1.1.0
>
>
> As part of NIFI-1500 we noted that NiFi requires what can be described as
> excessive filesystem privileges to be executed.
> One of the issues identified is that NiFi requires write access to
> NIFI_HOME/lib as illustrated by the following:
> {code}
> nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-nar-utils/src/main/java/org/apache/nifi/nar/NarUnpacker.java
> for (Path narLibraryDir : narLibraryDirs) {
> File narDir = narLibraryDir.toFile();
> FileUtils.ensureDirectoryExistAndCanAccess(narDir);
> File[] dirFiles = narDir.listFiles(NAR_FILTER);
> if (dirFiles != null) {
> List<File> fileList = Arrays.asList(dirFiles);
> narFiles.addAll(fileList);
> }
> }
> {code}
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