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https://issues.apache.org/jira/browse/FLINK-25041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17485294#comment-17485294
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Fabian Paul commented on FLINK-25041:
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Merged in master: 8a9a08bf408aae8a33438a38614199efeb8f1c63
> E2E tar ball cache fails without error message if target directory not
> specified
> --------------------------------------------------------------------------------
>
> Key: FLINK-25041
> URL: https://issues.apache.org/jira/browse/FLINK-25041
> Project: Flink
> Issue Type: Technical Debt
> Components: Test Infrastructure
> Affects Versions: 1.14.0, 1.13.3, 1.15.0
> Reporter: Fabian Paul
> Assignee: Mika Naylor
> Priority: Minor
> Labels: pull-request-available, stale-assigned
>
> We want to verify if the variable has been set.
> {code:java}
> if [ -z "$E2E_TARBALL_CACHE" ] ; then
> echo "You have to export the E2E Tarball Cache as E2E_TARBALL_CACHE"
> exit 1
> fi {code}
> but the shown code immediately fails with an `unbound variable` error if the
> variable is not set and it does not evaluate the branch.
>
> We should change it to something like this
> {code:java}
> if [ "${E2E_TARBALL_CACHE+x}" == x ] ; then
> echo "You have to export the E2E Tarball Cache as E2E_TARBALL_CACHE"
> exit 1
> fi {code}
>
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