[sheepdog] [PATCH 0/2] A better way to remove queue nodes

[Meng Lingkun]

Zookeeper cluster driver can't and doesn't delete the znode in queue
after using it. It makes zookeeper occupy much more memory. And it makes
troubles when zookeeper client reconnects to zookeeper server.
reference: https://issues.apache.org/jira/browse/ZOOKEEPER-706
Subcommand delete provides a better way than purge subcommand:
1. sheep update it's queue_pos to zookeeper server;
2. zk_control find the minimum of all sheeps' queue_pos, and removes
   znodes seq < minimum;
3. zk_control can run in crond to limit the queue znode.

Meng Lingkun (2):
  zookeeper: update queue_pos to zookeeper-server
  tools/zk_control: add detele subcommand to remove queue nodes

 sheep/cluster/zookeeper.c | 32 +++++++++++++++++
 tools/zk_control.c        | 88 ++++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 119 insertions(+), 1 deletion(-)

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1.9.1