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From "liang xie (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5714) Add write permissions check before any hbck run that modifies hdfs.
Date Sat, 18 Aug 2012 15:59:37 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5714?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437353#comment-13437353

liang xie commented on HBASE-5714:

Sorry for no new test-case attached´╝îi'm still a very newbie for HBase project:)
I tested as following steps:
1) run as an under-privileged user on base code, issue this command : "hbase org.apache.hadoop.hbase.util.hbck.OfflineMetaRepair",
it failed after several read-only operations

2) apply this patch, rerun , got the fast-fail as expected :
12/08/18 23:37:21 WARN util.HBaseFsck: Got AccessControlException when preCheckPermission
org.apache.hadoop.security.AccessControlException: Permission denied: action=WRITE path=hdfs://
        at org.apache.hadoop.hbase.util.FSUtils.checkAccess(FSUtils.java:1064)
        at org.apache.hadoop.hbase.util.HBaseFsck.preCheckPermission(HBaseFsck.java:1184)
        at org.apache.hadoop.hbase.util.hbck.OfflineMetaRepair.main(OfflineMetaRepair.java:97)
Current user xiaomi does not have write perms to hdfs:// Please
rerun hbck as hdfs user root
> Add write permissions check before any hbck run that modifies hdfs.
> -------------------------------------------------------------------
>                 Key: HBASE-5714
>                 URL: https://issues.apache.org/jira/browse/HBASE-5714
>             Project: HBase
>          Issue Type: Sub-task
>          Components: hbck
>    Affects Versions: 0.90.6, 0.92.2, 0.94.0, 0.96.0
>            Reporter: Jonathan Hsieh
>         Attachments: HBASE-5628.patch
> We encoutered a situation where hbck was run by an under-privileged user that was unable
to write/modify/merge regions due to hdfs perms.  Unfortunately, this user was alerted of
this  after several minutes of read-only operations.  hbck should fail early by having a write
perm check and providing actionable advice to the hbase admin.
> Maybe something like: "Current user yy does not have write perms to <hbase home>.
Please run hbck as hdfs user xxx"

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