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https://issues.apache.org/jira/browse/HBASE-30159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Junegunn Choi resolved HBASE-30159.
-----------------------------------
Fix Version/s: 2.7.0
3.0.0-beta-2
2.5.16
2.6.7
Resolution: Fixed
Thank you [~jinhyukify] for the contribution!
Pushed to the following branches:
* master
* branch-3
* branch-2
* branch-2.6
* branch-2.5
> Make hash algorithm configurable for HashTable/SyncTable
> --------------------------------------------------------
>
> Key: HBASE-30159
> URL: https://issues.apache.org/jira/browse/HBASE-30159
> Project: HBase
> Issue Type: Sub-task
> Reporter: Balazs Meszaros
> Assignee: JinHyuk Kim
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.7.0, 3.0.0-beta-2, 2.5.16, 2.6.7
>
>
> The HashTable MapReduce job utilizes MD5 hashes to determine whether row data
> needs to be synchronized between source and target tables. However, because
> users can control all hash inputs (row, column family, column, value, and
> timestamp), a malicious user could intentionally trigger a collision by
> creating two distinct rows with identical hashes. This would result in less
> rows in the target table which is hard to find.
> We must make the hashing algorithm configurable to allow for more
> collision-resistant hash algorithms.
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