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From "Szabolcs Vasas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SQOOP-3042) Sqoop does not clear compile directory under /tmp/sqoop-<username>/compile automatically
Date Fri, 11 Jan 2019 13:52:00 GMT

    [ https://issues.apache.org/jira/browse/SQOOP-3042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16740394#comment-16740394

Szabolcs Vasas commented on SQOOP-3042:

The error means that the generated source file cannot be moved to the code output directory,
which is the current directory by default but can be overridden with the --outdir option.

So depending on the use case it could be a real error because I can imagine in some cases
the user needs these generated files but in most of the cases they care about the import only
which is not impacted by this error.

So we could argue for both keeping this behavior and restore the original one but I think
if you explain the impact of the error to the customer they should be ok.


> Sqoop does not clear compile directory under /tmp/sqoop-<username>/compile automatically
> ----------------------------------------------------------------------------------------
>                 Key: SQOOP-3042
>                 URL: https://issues.apache.org/jira/browse/SQOOP-3042
>             Project: Sqoop
>          Issue Type: Bug
>    Affects Versions: 1.4.6
>            Reporter: Eric Lin
>            Assignee: Eric Lin
>            Priority: Critical
>              Labels: patch
>             Fix For: 3.0.0
>         Attachments: SQOOP-3042.1.patch, SQOOP-3042.2.patch, SQOOP-3042.4.patch, SQOOP-3042.5.patch,
SQOOP-3042.6.patch, SQOOP-3042.7.patch, SQOOP-3042.9.patch
> After running sqoop, all the temp files generated by ClassWriter are left behind on disk,
so anyone can check those JAVA files to see the schema of those tables that Sqoop has been
interacting with. By default, the directory is under /tmp/sqoop-<username>/compile.
> In class org.apache.sqoop.SqoopOptions, function getNonceJarDir(), I can see that we
did add "deleteOnExit" on the temp dir:
> {code}
>     for (int attempts = 0; attempts < MAX_DIR_CREATE_ATTEMPTS; attempts++) {
>       hashDir = new File(baseDir, RandomHash.generateMD5String());
>       while (hashDir.exists()) {
>         hashDir = new File(baseDir, RandomHash.generateMD5String());
>       }
>       if (hashDir.mkdirs()) {
>         // We created the directory. Use it.
>         // If this directory is not actually filled with files, delete it
>         // when the JVM quits.
>         hashDir.deleteOnExit();
>         break;
>       }
>     }
> {code}
> However, I believe it failed to delete due to directory is not empty.

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