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ASF GitHub Bot commented on NIFI-2928: -------------------------------------- GitHub user olegz opened a pull request: https://github.com/apache/nifi/pull/1160 NIFI-2928 added support to validate accessibility of the file system Thank you for submitting a contribution to Apache NiFi. In order to streamline the review of the contribution we ask you to ensure the following steps have been taken: ### For all changes: - [ ] Is there a JIRA ticket associated with this PR? Is it referenced in the commit message? - [ ] Does your PR title start with NIFI-XXXX where XXXX is the JIRA number you are trying to resolve? Pay particular attention to the hyphen "-" character. - [ ] Has your PR been rebased against the latest commit within the target branch (typically master)? - [ ] Is your initial contribution a single, squashed commit? ### For code changes: - [ ] Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder? - [ ] Have you written or updated unit tests to verify your changes? - [ ] If adding new dependencies to the code, are these dependencies licensed in a way that is compatible for inclusion under [ASF 2.0](http://www.apache.org/legal/resolved.html#category-a)? - [ ] If applicable, have you updated the LICENSE file, including the main LICENSE file under nifi-assembly? - [ ] If applicable, have you updated the NOTICE file, including the main NOTICE file found under nifi-assembly? - [ ] If adding new Properties, have you added .displayName in addition to .name (programmatic access) for each of the new properties? ### For documentation related changes: - [ ] Have you ensured that format looks appropriate for the output in which it is rendered? ### Note: Please ensure that once the PR is submitted, you check travis-ci for build issues and submit an update to your PR as soon as possible. NIFI-2928 polishing You can merge this pull request into a Git repository by running: $ git pull https://github.com/olegz/nifi NIFI-2928 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/nifi/pull/1160.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #1160 ---- commit 662da5e42f0fc61ca8c7afc906b43fbc1fd4a386 Author: Oleg Zhurakousky <o...@suitcase.io> Date: 2016-10-26T16:57:37Z NIFI-2928 added support to validate accessibility of the file system NIFI-2928 polishing ---- > FetchFile routes to not.found when it cannot determine whether or not the > file exists > ------------------------------------------------------------------------------------- > > Key: NIFI-2928 > URL: https://issues.apache.org/jira/browse/NIFI-2928 > Project: Apache NiFi > Issue Type: Bug > Components: Core Framework > Affects Versions: 0.7.1 > Reporter: Christopher McDermott > Assignee: Oleg Zhurakousky > Fix For: 1.1.0 > > > I have a flow that reads files from an NFS volume. To simulate the NFS > server being offline/unreachable I am using IP tables to block all TCP > traffic between the NFS server and the host running NiFi. > Trying to read files using FetchFile, I am seeing > 2016-10-20 20:34:31,789 ERROR [Timer-Driven Process Thread-4] > o.a.nifi.processors.standard.FetchFile > FetchFile[id=9e642524-0e05-4d58-aabc-d6b49d687917] Could not fetch file > /share/st5103/REDACTED from file system for > StandardFlowFileRecord[uuid=1f88f322-57a2-4ac5-87df-d53fdd63d52c,claim=StandardContentClaim > [resourceClaim=StandardResourceClaim[id=1476995181657-18524, > container=default, section=92], offset=569544, > length=745],offset=0,name=1248995905448067,size=745] because the file does > not exist; routing to not.found > The file is actually there, but of course it is inaccessible because the > network traffic is blocked. > I see the code is using {{File.exists()}}. > This [bug|https://bugs.openjdk.java.net/browse/JDK-6191254] report suggest > that it should instead use > {{[File.toPath().checkAccess()|http://download.java.net/jdk7/archive/b123/docs/api/java/nio/file/Path.html#checkAccess(java.nio.file.AccessMode...)]}} > {{[java.nio.Files.notExists()|http://docs.oracle.com/javase/7docs/api/java/nio/file/Files.html#notExists-java.nio.file.Path-java.nio.file.LinkOption...-]}} > uses {{checkAccess()}} and might be a drop-in replacement. -- This message was sent by Atlassian JIRA (v6.3.4#6332)