[jira] Commented: (DERBY-4102) Assert failure or ClassCastException in EmbedBlob when retrieving BLOB >= 32K

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-4102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12694069#action_12694069 ] 

Knut Anders Hatlen commented on DERBY-4102:
-------------------------------------------

The patch looks good to me. I've verified that the repro passes with the fix, and that the test case fails without the fix and passes with the fix.

> Assert failure or ClassCastException in EmbedBlob when retrieving BLOB >= 32K
> -----------------------------------------------------------------------------
>
>                 Key: DERBY-4102
>                 URL: https://issues.apache.org/jira/browse/DERBY-4102
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.1.1.0, 10.2.2.0, 10.3.3.0, 10.4.2.0, 10.5.0.0, 10.6.0.0
>            Reporter: Knut Anders Hatlen
>         Attachments: CastExc.java, derby-4102-1a.diff, derby-4102-1a.stat
>
>
> The code below results in an assert error (with sane jars) or a ClassCastException (with insane jars):
>         PreparedStatement ps = c.prepareStatement("values cast(? as blob)");
>         int len = 32 * 1024;
>         ps.setBinaryStream(1, new ByteArrayInputStream(new byte[len]), len);
>         ResultSet rs = ps.executeQuery();
>         while (rs.next()) {
>             rs.getBlob(1);
>         }
> If len < 32K there is no error.

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