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https://issues.apache.org/jira/browse/YARN-11738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17938193#comment-17938193
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Steve Loughran commented on YARN-11738:
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This now logs at INFO every time I run any hadoop command
{code}
bin/hadoop s3guard bucket-info $BUCKET
2025-03-25 12:05:44,838 [main] INFO token.SecretManager
(SecretManager.java:<clinit>(126)) - Selected hash algorithm: HmacSHA1
2025-03-25 12:05:44,838 [main] INFO token.SecretManager
(SecretManager.java:<clinit>(131)) - Selected hash key length:64
Filesystem s3a://stevel-london
Location: eu-west-2
{code}
> Modernize SecretManager config
> ------------------------------
>
> Key: YARN-11738
> URL: https://issues.apache.org/jira/browse/YARN-11738
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: yarn
> Affects Versions: 3.4.1
> Reporter: Bence Kosztolnik
> Assignee: Bence Kosztolnik
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0
>
>
> FIPS-compliant HMAC-SHA1 algorithms require secret keys to be at least 112
> bits long.
> https://github.com/apache/hadoop/blob/98c2bc87b1445c533268c58d382ea4e4297303fd/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/SecretManager.java#L144
> Should be set to 128 to be FIPS compatible.
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