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[jira] [Reopened] (HBASE-20579) Improve snapshot manifest copy in ExportSnapshot


     [ https://issues.apache.org/jira/browse/HBASE-20579?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Elser reopened HBASE-20579:
--------------------------------

If the chown/chgrp fail, the real exception is now not propagated for the user to see.
{code:java}
+      try {
+        fs.setOwner(path, filesUser, filesGroup);
+      } catch (IOException e) {
+        throw new RuntimeException(
+            "set owner for file " + path + " to " + filesUser + ":" + filesGroup + " failed");
       }{code}
{code:java}
+      try {
+        fs.setPermission(path, perm);
+      } catch (IOException e) {
+        throw new RuntimeException(
+            "set permission for file " + path + " to " + filesMode + " failed");
+      }{code}
Need to put an addendum on this..

> Improve snapshot manifest copy in ExportSnapshot
> ------------------------------------------------
>
>                 Key: HBASE-20579
>                 URL: https://issues.apache.org/jira/browse/HBASE-20579
>             Project: HBase
>          Issue Type: Improvement
>          Components: mapreduce
>    Affects Versions: 1.4.0, 1.5.0, 2.0.0
>            Reporter: Jingyun Tian
>            Assignee: Jingyun Tian
>            Priority: Minor
>             Fix For: 3.0.0, 2.1.0
>
>         Attachments: HBASE-20579.master.001.patch, HBASE-20579.master.002.patch
>
>
> ExportSnapshot need to copy snapshot manifest to destination cluster first, then setOwner and setPermission for those paths. But it's done with one thread, which lead to a long time to submit the job if your snapshot is big. I tried to make them processing in parallel, which can reduce the total time of submitting dramatically. 



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