[jira] Commented: (IVY-605) XmlReportOutputter not safe

["Xavier Hanin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IVY-605?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12573383#action_12573383 ] 

Xavier Hanin commented on IVY-605:
----------------------------------

There's another workaround in latest ivy version: use a separate resolution cache for concurrent resolve. I don't think we need to support the use case of concurrent resolve execution with these two workarounds. Hence I think we should just double check the documentation clearly states that we don't support this, and then mark this bug as resolved wontfix.

> XmlReportOutputter not safe
> ---------------------------
>
>                 Key: IVY-605
>                 URL: https://issues.apache.org/jira/browse/IVY-605
>             Project: Ivy
>          Issue Type: Bug
>          Components: Core
>            Reporter: Jean-Baptiste Quenot
>             Fix For: 2.0
>
>
> When issuing several "resolve" task in parallel on several projects having the *same* Ivy file, it may happen that the generated XML reports in ivy cache are overwritten.  And thus at a given moment in time, this file may appear empty, as FileOutputStream overwrites the destination directly.  When using the "report" task (also in parallel), this leads to the following error:
> {noformat}
> [ivy:report] Transforming into /path/to/myproject/target/ivy-reports
> [ivy:report] Processing /path/to/ivy-cache/myproject-compile.xml to /path/to/myproject/target/ivy-reports/myproject-compile.html
> [ivy:report] Loading stylesheet /path/to/ivy-cache/ivy-report.xsl
> [ivy:report] Processing /path/to/ivy-cache/myproject-default.xml to /path/to/myproject/target/ivy-reports/myproject-default.html
> [ivy:report] : Error! Premature end of file.
> BUILD FAILED
> build.xml:19: javax.xml.transform.TransformerException: javax.xml.transform.TransformerException: com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: Premature end of file.
> Total time: 33 seconds
> [ivy:report] : Error! com.sun.org.apache.xml.internal.utils.WrappedRuntimeException: Premature end of file.
> [ivy:report] Failed to process null
> {noformat}

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