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[HADOOP-8243] Security support broken in CLI (manual) failover controller - Hadoop - [issue]
...Some recent refactoring accidentally caused the proxies in some places to get created with a default Configuration, instead of using the Configuration set up by the DFSHAAdmin tool. This cau...
http://issues.apache.org/jira/browse/HADOOP-8243    Author: Todd Lipcon, 2012-04-04, 14:13
[HADOOP-8215] Security support for ZK Failover controller - Hadoop - [issue]
...To keep the initial patches manageable, kerberos security is not currently supported in the ZKFC implementation. This JIRA is to support the following important pieces for security: integrat...
http://issues.apache.org/jira/browse/HADOOP-8215    Author: Todd Lipcon, 2012-04-03, 23:37
[HADOOP-8217] Edge case split-brain race in ZK-based auto-failover - Hadoop - [issue]
...As discussed in HADOOP-8206, the current design for automatic failover has the following race: ZKFC1 gets active lock ZKFC1 is about to send transitionToActive() and machine freezes (eg GC p...
http://issues.apache.org/jira/browse/HADOOP-8217    Author: Todd Lipcon, 2012-03-31, 01:55
[HADOOP-8228] Auto HA: Refactor tests and add stress tests - Hadoop - [issue]
...It's important that the ZKFailoverController be robust and not contain race conditions, etc. One strategy to find potential races is to add stress tests which exercise the code as fast as po...
http://issues.apache.org/jira/browse/HADOOP-8228    Author: Todd Lipcon, 2012-03-30, 20:31
[HADOOP-8220] ZKFailoverController doesn't handle failure to become active correctly - Hadoop - [issue]
...The ZKFC doesn't properly handle the case where the monitored service fails to become active. Currently, it catches the exception and logs a warning, but then continues on, after calling qui...
http://issues.apache.org/jira/browse/HADOOP-8220    Author: Todd Lipcon, 2012-03-30, 20:24
[HADOOP-8212] Improve ActiveStandbyElector's behavior when session expires - Hadoop - [issue]
...Currently when the ZK session expires, it results in a fatal error being sent to the application callback. This is not the best behavior – for example, in the case of HA, if ZK goes do...
http://issues.apache.org/jira/browse/HADOOP-8212    Author: Todd Lipcon, 2012-03-29, 21:48
Re: activity on IRC . - Hadoop - [mail # user]
...Hey Jay,  That's the only one I know of. Not a lot of idle chatter, but when people have questions, discussions do start up. Much more active during PST working hours, of course :) &nbs...
   Author: Todd Lipcon, 2012-03-28, 19:26
[HADOOP-8205] Potential design improvements for ActiveStandbyElector API - Hadoop - [issue]
...Bikas suggested some improvements to the API for ActiveStandbyElector in HADOOP-8163:I have a feeling that putting the fencing concept into the elector is diluting the distinctness between t...
http://issues.apache.org/jira/browse/HADOOP-8205    Author: Todd Lipcon, 2012-03-28, 19:24
[HADOOP-8071] Avoid an extra packet in client code when nagling is disabled - Hadoop - [issue]
...Currently, if you disable TCP_NODELAY in the IPC client, you get an extra packet for each call which contains the call's length. This is unnecessary. Instead, we can just reserve the 4 bytes...
http://issues.apache.org/jira/browse/HADOOP-8071    Author: Todd Lipcon, 2012-03-28, 09:19
[HADOOP-7729] Send back valid HTTP response if user hits IPC port with HTTP GET - Hadoop - [issue]
...Often, I've seen users get confused between the IPC ports and HTTP ports for a daemon. It would be easy for us to detect when an HTTP GET request hits an IPC port, and instead of sending bac...
http://issues.apache.org/jira/browse/HADOOP-7729    Author: Todd Lipcon, 2012-03-28, 08:19
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