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https://issues.apache.org/jira/browse/BEAM-6545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kenneth Knowles resolved BEAM-6545.
-----------------------------------
Resolution: Fixed
> NPE when decoding null base 64 strings
> --------------------------------------
>
> Key: BEAM-6545
> URL: https://issues.apache.org/jira/browse/BEAM-6545
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Affects Versions: 2.9.0
> Reporter: Ahmet Altay
> Assignee: Kenneth Knowles
> Priority: Major
> Fix For: 2.10.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> **ByteArrayShufflePosition.fromBase64 is marked with a @Nullable argument,
> however it does not properly handle null inputs resulting in NPE.
> This seems like an unintended change we picked up from the dependency:
> google-http-java-client/ switched from apache commons to guava
> ([https://github.com/googleapis/google-http-java-client/commit/990c534f0e5103a142b0639c12c90cb990a00cfd#diff-97264fba16d690a26d63fbbc992af937)]
>
>
> and decodeBase64 behaves differently in both cases. Former can handle null by
> returning null, latter will throw NPE.
>
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