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https://issues.apache.org/jira/browse/HADOOP-19299?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17886602#comment-17886602
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Harshit Gupta commented on HADOOP-19299:
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Hi [~ste...@apache.org] , can you give some repro steps for this and maybe I
can pick it up?
> ConcurrentModificationException in HttpReferrerAuditHeader
> ----------------------------------------------------------
>
> Key: HADOOP-19299
> URL: https://issues.apache.org/jira/browse/HADOOP-19299
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 3.4.1
> Reporter: Steve Loughran
> Priority: Major
>
> Surfaced during a test run doing vector iO, where multiple parallel GETs were
> being issued within the same audit span, just when the header is built by
> enumerating the attributes.
> {code}
> queries = attributes.entrySet().stream()
> .filter(e -> !filter.contains(e.getKey()))
> .map(e -> e.getKey() + "=" + e.getValue())
> .collect(Collectors.joining("&"));
> {code}
> Hypothesis: multiple GET requests are conflicting in updating/reading the
> header.
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