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ASF GitHub Bot commented on NIFI-4647: -------------------------------------- GitHub user mattyb149 opened a pull request: https://github.com/apache/nifi/pull/2644 NIFI-4647: Fix support for strings in unions for ConvertAvroToORC 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: - [x] Is there a JIRA ticket associated with this PR? Is it referenced in the commit message? - [x] 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. - [x] Has your PR been rebased against the latest commit within the target branch (typically master)? - [x] Is your initial contribution a single, squashed commit? ### For code changes: - [x] Have you ensured that the full suite of tests is executed via mvn -Pcontrib-check clean install at the root nifi folder? - [x] 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. You can merge this pull request into a Git repository by running: $ git pull https://github.com/mattyb149/nifi NIFI-4647 Alternatively you can review and apply these changes as the patch at: https://github.com/apache/nifi/pull/2644.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 #2644 ---- commit 1f3c1e0b0ddd5565a67740c1830458fbff2ea490 Author: Matthew Burgess <mattyb149@...> Date: 2018-04-18T18:49:16Z NIFI-4647: Fix support for strings in unions for ConvertAvroToORC ---- > ConvertAvroToORC fails if the avro schema uses a union of a null, string, and > long > ---------------------------------------------------------------------------------- > > Key: NIFI-4647 > URL: https://issues.apache.org/jira/browse/NIFI-4647 > Project: Apache NiFi > Issue Type: Bug > Components: Core Framework > Reporter: Benjamin Garrett > Assignee: Matt Burgess > Priority: Major > > If an avro schema has a field defined like this: > {"name":"myStringOrLong","type":["null","string","long"],"default":null} > then when we run ConvertAvroToORC we get the following error: > Object Type for class org.apache.avro.util.Utf8 not in Union declaration > This is because Avro uses its internal Utf8 class (instead of 'String') as a > performance optimization as discussed elsewhere on the internet, such as > here: > http://apache-avro.679487.n3.nabble.com/why-Utf8-vs-String-td3247788.html > but the NiFiOrcUtils class is not expecting the Utf8 class to be used for > 'string' types. > A simple workaround is to modify NiFiOrcUtils lines 72-73 to be something > like this: > Class clazzToCompareTo = o.getClass(); > if (o instanceof org.apache.avro.util.Utf8 ) { > clazzToCompareTo = String.class; > } > TypeInfo objectTypeInfo = > TypeInfoUtils.getTypeInfoFromObjectInspector( > ObjectInspectorFactory.getReflectionObjectInspector( > clazzToCompareTo, > ObjectInspectorFactory.ObjectInspectorOptions.JAVA)); > This solution works for me. -- This message was sent by Atlassian JIRA (v7.6.3#76005)