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[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
[HADOOP-8070] Add standalone benchmark of protobuf IPC - Hadoop - [issue]
...To be more comfortable with the switch to protobuf IPC, I'd like to contribute a standalone benchmark which can start any number of client threads and server threads....
http://issues.apache.org/jira/browse/HADOOP-8070    Author: Todd Lipcon, 2012-03-28, 08:19
[HADOOP-8163] Improve ActiveStandbyElector to provide hooks for fencing old active - Hadoop - [issue]
...When a new node becomes active in an HA setup, it may sometimes have to take fencing actions against the node that was formerly active. This JIRA extends the ActiveStandbyElector which adds ...
http://issues.apache.org/jira/browse/HADOOP-8163    Author: Todd Lipcon, 2012-03-28, 08:19
[HADOOP-7968] Errant println left in RPC.getHighestSupportedProtocol - Hadoop - [issue]
...hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/RPC.java: System.out.println("Size of protoMap for " + rpcKind + " =" + getProtocolImplMap(rpcKind).size());...
http://issues.apache.org/jira/browse/HADOOP-7968    Author: Todd Lipcon, 2012-03-28, 08:19
[HADOOP-8206] Common portion of ZK-based failover controller - Hadoop - [issue]
...This JIRA is for the Common (generic) portion of HDFS-2185. It can't run on its own, but this JIRA will include unit tests using mock/dummy services....
http://issues.apache.org/jira/browse/HADOOP-8206    Author: Todd Lipcon, 2012-03-27, 13:58
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