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From "Jim Kellerman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-711) Complain if clock skew across the cluster is badly out of sync
Date Wed, 06 Aug 2008 19:20:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-711?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12620392#action_12620392
] 

Jim Kellerman commented on HBASE-711:
-------------------------------------

Another place we use the current time is in the creation of HLog files.

Proposal: instead of using the current time, use the current sequence number (with leading
zero padding out to some large size so the files still sort properly). The files would still
be increasing, and sort properly.

> Complain if clock skew across the cluster is badly out of sync
> --------------------------------------------------------------
>
>                 Key: HBASE-711
>                 URL: https://issues.apache.org/jira/browse/HBASE-711
>             Project: Hadoop HBase
>          Issue Type: New Feature
>            Reporter: stack
>            Assignee: Jim Kellerman
>            Priority: Minor
>
> hbase-710 and hbase-609 are issues where the system has broken in presence of clock skew
over the cluster.  Would be a nice service if master could flag very bad clock skew.  Regionservers
could report their local time when they ping the master.  It could do a compare.

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