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From "Mayuresh Nirhali (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2549) ArrayIndexOutOfBoundsException in SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE
Date Mon, 14 May 2007 07:13:16 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2549?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mayuresh Nirhali updated DERBY-2549:

    Attachment: derby2549_v3.diff

Thanks Mike for your expert comments. I realized that '--' is inappropriate after posting
the patch. I am sure it would have taken a bit more time for me to come up with that solution
due to my limited understanding. I appreciate your time for the explanation and the patch.

I found two small nits in the latest patch. When, getRecordHandleAtSlot is called scan_position
has already moved back to the previous slot. This will imply incorrect behavior when current_slot
becomes -1. I have fixed this by storing the current_slot number in a new variable temp_current_slot
and passing this to getRecordHandleAtSlot.

I am starting testruns for this latest patch now.

I plan to add a test for this based on the repro attached. I will try to cut down the time
taken by the test by using small size data. I need some time for this as I am not very familiar
with junit fixtures. I am hoping that the testcase addition will go as a separate patch. let
me know your thoughts ??

> -------------------------------------------------------------------------
>                 Key: DERBY-2549
>                 URL: https://issues.apache.org/jira/browse/DERBY-2549
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions:
>         Environment: Linux 2.6.x, JRE 1.5.0_b7
>            Reporter: Kurt Huwig
>         Assigned To: Mayuresh Nirhali
>         Attachments: 2549-histogram.png, A2549Test.java, A2549Test2.java, derby-2549-v1.diff,
derby2549_mikem.diff, derby2549_mikemv2.diff, derby2549_v2.diff, derby2549_v3.diff, DerbyDiskSpaceDiag.java
> I am doing this in my code:
+ "',1,1,1)")
> ("journal" is actually a String-variable, but I replaced it here for easier understanding)
> Sometime - not always - I am getting this exception:
> java.sql.SQLException: The exception 'java.lang.ArrayIndexOutOfBoundsException: 100'
was thrown while evaluating an expression. SQLSTATE: XJ001:
> Java exception: '100: java.lang.ArrayIndexOutOfBoundsException'.
>         at org.apache.derby.client.am.SQLExceptionFactory.getSQLException(Unknown Source)
>         at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
>         at org.apache.derby.client.am.Statement.execute(Unknown Source)
> [...]
> Caused by: org.apache.derby.client.am.SqlException: The exception 'java.lang.ArrayIndexOutOfBoundsException:
100' was thrown while evaluating an expression.
>  SQLSTATE: XJ001: Java exception: '100: java.lang.ArrayIndexOutOfBoundsException'.
>         at org.apache.derby.client.am.Statement.completeExecute(Unknown Source)
>         at org.apache.derby.client.net.NetStatementReply.parseEXCSQLSTTreply(Unknown
>         at org.apache.derby.client.net.NetStatementReply.readExecuteCall(Unknown Source)
>         at org.apache.derby.client.net.StatementReply.readExecuteCall(Unknown Source)
>         at org.apache.derby.client.net.NetStatement.readExecuteCall_(Unknown Source)
>         at org.apache.derby.client.am.Statement.readExecuteCall(Unknown Source)
>         at org.apache.derby.client.am.Statement.flowExecute(Unknown Source)
>         at org.apache.derby.client.am.Statement.executeX(Unknown Source)
>         ... 12 more

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