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[HADOOP-6241] Script to split configurations from one file into multiple, according to templates. - Hadoop - [issue]
...This script moves properties from hadoop-site.xml into common-site, mapred-site, and hdfs-site in a reasonably generic way.  This is useful for upgrading clusters from 0.18 to 0.20 and ...
http://issues.apache.org/jira/browse/HADOOP-6241    Author: Philip Zeyliger, 2014-07-23, 21:43
[HADOOP-8292] TableMapping does not refresh when topology is updated - Hadoop - [issue]
...HADOOP-7030 introduced TableMapping, an implementation of DNSToSwitchMapping which uses a file to map from IPs/hosts to their racks.  It's intended to replace ScriptBasedMapping for cas...
http://issues.apache.org/jira/browse/HADOOP-8292    Author: Philip Zeyliger, 2014-05-14, 22:14
[HADOOP-7198] Hadoop defaults for web UI ports often fall smack in the middle of Linux ephemeral port range - Hadoop - [issue]
...It turns out (see http://en.wikipedia.org/wiki/Ephemeral_port and  /proc/sys/net/ipv4/ip_local_port_range) that when you bind to port 0, Linux chooses an ephemeral port.  On my def...
http://issues.apache.org/jira/browse/HADOOP-7198    Author: Philip Zeyliger, 2013-12-16, 18:48
[HADOOP-5469] Exposing Hadoop metrics via HTTP - Hadoop - [issue]
...Implement a "/metrics" URL on the HTTP server of Hadoop daemons, to expose metrics data to users via their web browsers, in plain-text and JSON....
http://issues.apache.org/jira/browse/HADOOP-5469    Author: Philip Zeyliger, 2012-12-20, 21:21
[HADOOP-8343] Allow configuration of authorization for JmxJsonServlet and MetricsServlet - Hadoop - [issue]
...When using authorization for the daemons' web server, it would be useful to specifically control the authorization requirements for accessing /jmx and /metrics.  Currently, they require...
http://issues.apache.org/jira/browse/HADOOP-8343    Author: Philip Zeyliger, 2012-11-02, 05:50
[HADOOP-8761] Help for FsShell's Stat incorrectly mentions "file size in blocks" (should be bytes) - Hadoop - [issue]
...Trivial patch attached corrects the usage information.  Stat.java calls FileStatus.getLen(), which is most definitely the file size in bytes....
http://issues.apache.org/jira/browse/HADOOP-8761    Author: Philip Zeyliger, 2012-09-04, 23:05
[HADOOP-8347] Hadoop Common logs misspell 'successful' - Hadoop - [issue]
...'successfull' is a misspelling of 'successful.'  Trivial patch attached.  The constants are private, and there doesn't seem to be any serialized form of these comments except in lo...
http://issues.apache.org/jira/browse/HADOOP-8347    Author: Philip Zeyliger, 2012-05-03, 18:17
[HADOOP-8236] haadmin should have configurable timeouts for failover commands - Hadoop - [issue]
...The HAAdmin failover could should time out reasonably aggressively and go onto the fencing strategies if it's dealing with a mostly dead active namenode.  Currently it uses what's proba...
http://issues.apache.org/jira/browse/HADOOP-8236    Author: Philip Zeyliger, 2012-04-02, 14:12
[HADOOP-8191] SshFenceByTcpPort uses netcat incorrectly - Hadoop - [issue]
...SshFencyByTcpPort currently assumes that the NN is listening on localhost.  Typical setups have the namenode listening just on the hostname of the namenode, which would lead "nc -z" to ...
http://issues.apache.org/jira/browse/HADOOP-8191    Author: Philip Zeyliger, 2012-03-21, 13:58
Re: Configuring Heap Size for Name Node - Hadoop - [mail # dev]
...HADOOP_NAMENODE_OPTS="-Xmx500m" will set it to 500MB.  The "OPTS" here refers to JVM options.  -Xmx is a common JVM option to set the maximum heap.   On Wed, Dec 1, 2010 at 4:...
   Author: Philip Zeyliger, 2010-12-02, 06:11
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