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https://issues.apache.org/jira/browse/HDFS-16272?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stephen O'Donnell reassigned HDFS-16272:
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Assignee: daimin
> Int overflow in computing safe length during EC block recovery
> --------------------------------------------------------------
>
> Key: HDFS-16272
> URL: https://issues.apache.org/jira/browse/HDFS-16272
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: 3.1.1
> Affects Versions: 3.3.0, 3.3.1
> Environment: Cluster settings: EC RS-8-2-256k, Block Size 1GiB.
> Reporter: daimin
> Assignee: daimin
> Priority: Critical
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> There exists an int overflow problem in StripedBlockUtil#getSafeLength, which
> will produce a negative or zero length:
> 1. With negative length, it fails to the later >=0 check, and will crash the
> BlockRecoveryWorker thread, which make the lease recovery operation unable to
> finish.
> 2. With zero length, it passes the check, and directly truncate the block
> size to zero, leads to data lossing.
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