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https://issues.apache.org/jira/browse/IVY-1589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16580735#comment-16580735
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Simon Wade edited comment on IVY-1589 at 8/15/18 5:27 AM:
----------------------------------------------------------
As far as I can tell, the root cause seems to be line 174 of FileUtil.java:
{code:java}
existingChild = Arrays.asList(children);
{code}
The value returned by asList() does not support the remove() operation, which
is the cause of the exception at line 188 (as seen in the stack trace). A bit
of Google-Fu suggests the following fix:
{code:java}
existingChild = new ArrayList(Arrays.asList(children));
{code}
was (Author: simon wade):
As far as I can tell, the root cause seems to be line 174 of FileUtil.java:
{code:java}
existingChild = Arrays.asList(children);
{code}
The value returned by asList() does not support the remove() operation, which
is the cause of the exception at line 190 (as seen in the stack trace). A bit
of Google-Fu suggests the following fix:
{code:java}
existingChild = new ArrayList(Arrays.asList(children));
{code}
> UnsupportedOperationException on consecutive retrieves
> ------------------------------------------------------
>
> Key: IVY-1589
> URL: https://issues.apache.org/jira/browse/IVY-1589
> Project: Ivy
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.5.0-rc1
> Reporter: Simon Wade
> Priority: Major
>
> Following a successful retrieve with overwriteMode set to "always",
> subsequent retrieve tasks seem to throw an UnsupportedOperationException, as
> shown in the following stack trace:
> {noformat}
> Caused by: java.lang.UnsupportedOperationException
> at java.util.AbstractList.remove(AbstractList.java:161)
> at java.util.AbstractList$Itr.remove(AbstractList.java:374)
> at java.util.AbstractCollection.remove(AbstractCollection.java:293)
> at org.apache.ivy.util.FileUtil.deepCopy(FileUtil.java:188)
> at org.apache.ivy.util.FileUtil.copy(FileUtil.java:143)
> at
> org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:171)
> ... 19 more
> {noformat}
>
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