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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15433) SnapshotManager#restoreSnapshot not update table and region count quota correctly when encountering exception
Date Thu, 09 Nov 2017 00:20:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-15433:
-----------------------------------
    Fix Version/s:     (was: 1.4.0)

> SnapshotManager#restoreSnapshot not update table and region count quota correctly when
encountering exception
> -------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-15433
>                 URL: https://issues.apache.org/jira/browse/HBASE-15433
>             Project: HBase
>          Issue Type: Bug
>          Components: snapshots
>    Affects Versions: 2.0.0
>            Reporter: Jianwei Cui
>            Assignee: Jianwei Cui
>             Fix For: 2.0.0, 1.3.0, 1.2.1, 1.1.5
>
>         Attachments: HBASE-15433-branch-1-v1.patch, HBASE-15433-trunk-v1.patch, HBASE-15433-trunk-v2.patch,
HBASE-15433-trunk.patch, HBASE-15433-v3.patch, HBASE-15433-v4.patch
>
>
> In SnapshotManager#restoreSnapshot, the table and region quota will be checked and updated
as:
> {code}
>       try {
>         // Table already exist. Check and update the region quota for this table namespace
>         checkAndUpdateNamespaceRegionQuota(manifest, tableName);
>         restoreSnapshot(snapshot, snapshotTableDesc);
>       } catch (IOException e) {
>         this.master.getMasterQuotaManager().removeTableFromNamespaceQuota(tableName);
>         LOG.error("Exception occurred while restoring the snapshot " + snapshot.getName()
>             + " as table " + tableName.getNameAsString(), e);
>         throw e;
>       }
> {code}
> The 'checkAndUpdateNamespaceRegionQuota' will fail if regions in the snapshot make the
region count quota exceeded, then, the table will be removed in the 'catch' block. This will
make the current table count and region count decrease, following table creation or region
split will succeed even if the actual quota is exceeded.



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