hadoop-common-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Hive/Locking" by NamitJain
Date Wed, 05 May 2010 21:28:17 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hadoop Wiki" for change notification.

The "Hive/Locking" page has been changed by NamitJain.
http://wiki.apache.org/hadoop/Hive/Locking?action=diff&rev1=22&rev2=23

--------------------------------------------------

   * Call create( ) to create a node with pathname "/warehouse/T/write-". This is the lock
node used later in the protocol. Make sure to set the sequence and ephemeral flag.
   * Call getChildren( ) on the lock node without setting the watch flag.
   * If there is a child with a pathname starting with "read-" or "write-" and a lower sequence
number than the one obtained, the lock cannot be acquired. Delete the node created in the
first step and return.
-  * For all parent znodes of T, call getChildren() without setting the watch flag.
+  * For the parent znode of T, call getChildren() without setting the watch flag.
     * If there is a child with a pathname starting with "read-" or "write-", the lock cannot
be acquired. Delete the node created in the first step and return.
   * For all children znodes of T, call getChildren() without setting the watch flag.
     * If there is a child with a pathname starting with "read-" or "write-", the lock cannot
be acquired. Delete the node created in the first step and return.

Mime
View raw message