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https://issues.apache.org/jira/browse/HDFS-13637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Íñigo Goiri updated HDFS-13637:
-------------------------------
Resolution: Fixed
Hadoop Flags: Reviewed
Fix Version/s: 3.0.4
2.9.2
3.1.1
3.2.0
2.10.0
Status: Resolved (was: Patch Available)
Thanks [~crh] for the fix.
Committed to trunk, branch-3.1, branch-3.0, branch-2.10, and branch-2.9.
[~linyiqun], note that this is a critical bugfix and I went ahead and committed.
> RBF: Router fails when threadIndex (in ConnectionPool) wraps around
> Integer.MIN_VALUE
> -------------------------------------------------------------------------------------
>
> Key: HDFS-13637
> URL: https://issues.apache.org/jira/browse/HDFS-13637
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: federation
> Reporter: CR Hota
> Assignee: CR Hota
> Priority: Critical
> Labels: RBF
> Fix For: 2.10.0, 3.2.0, 3.1.1, 2.9.2, 3.0.4
>
> Attachments: HDFS-13637.0.patch, HDFS-13637.1.patch,
> HDFS-13637.2.patch, HDFS-13637.3.patch
>
>
> {code:java}
> int threadIndex = this.clientIndex.getAndIncrement();
> for (int i=0; i<size; i++) {
> int index = (threadIndex + i) % size;
> conn = tmpConnections.get(index);
> if (conn != null && conn.isUsable()) {
> return conn;
> }
> }
> {code}
> The above code in ConnectionPool.java getConnection method throws
> java.lang.ArrayIndexOutOfBoundsException when clientIndex wraps to
> Integer.MIN_VALUE and makes router reject all requests. threadIndex should be
> reset to 0.
> {code:java}
> if (threadIndex < 0) {
> // Wrap around 0 to keep array lookup index positive
> this.clientIndex.set(0);
> threadIndex = this.clientIndex.getAndIncrement();
> }
> {code}
>
>
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