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[HDFS-7423] various typos and message formatting fixes in nfs daemon and doc - HDFS - [issue]
...These are accumulated fixes for log messages, formatting, typos, etc. in the nfs3 daemon that I came across while working on a customer issue....
http://issues.apache.org/jira/browse/HDFS-7423    Author: Charles Lamb, 2015-04-10, 21:30
[HDFS-8099] Change "DFSInputStream has been closed already" message to debug log level - HDFS - [issue]
...The hadoop fs -get command always shows this warning:$ hadoop fs -get /data/schemas/sfdc/BusinessHours-2014-12-09.avsc15/04/06 06:22:19 WARN hdfs.DFSClient: DFSInputStream has been closed al...
http://issues.apache.org/jira/browse/HDFS-8099    Author: Charles Lamb, 2015-04-10, 16:38
Re: How to enable debug log in HDFS - HDFS - [mail # dev]
...On 3/25/2015 11:13 AM, xiaohe lan wrote:Logger output goes to the .log file. Very little goes to the .out file IIRC.Charles ...
   Author: Charles Lamb, 2015-03-25, 16:10
Re: Fwd: How to enable debug log in HDFS - HDFS - [mail # dev]
...One way is to do:HADOOP_CLIENT_OPTS="-Dhadoop.root.logger=DEBUG,console"IHTH.CharlesOn 3/24/2015 10:25 AM, xiaohe lan wrote: ...
   Author: Charles Lamb, 2015-03-24, 14:40
[expand - 1 more] - Re: How the ack sent back to upstream of a pipeline when write data to HDFS - HDFS - [mail # dev]
...On 3/17/2015 10:53 AM, xiaohe lan wrote:Xiaohe,I assume you are referring to this code:           if (one.isLastPacketInBlock()) {       &nb...
   Author: Charles Lamb, 2015-03-20, 21:05
[HDFS-7910] Modify NNThroughputBenchmark to be able to provide some metrics - HDFS - [issue]
...Modify NNThroughputBenchmark to quantify native and java heap sizes, as well as some latency numbers....
http://issues.apache.org/jira/browse/HDFS-7910    Author: Charles Lamb, 2015-03-09, 23:27
[HDFS-7836] BlockManager Scalability Improvements - HDFS - [issue]
...Improvements to BlockManager scalability....
http://issues.apache.org/jira/browse/HDFS-7836    Author: Charles Lamb, 2015-03-09, 19:37
[HDFS-7682] {{DistributedFileSystem#getFileChecksum}} of a snapshotted file includes non-snapshotted content - HDFS - [issue]
...DistributedFileSystem#getFileChecksum of a snapshotted file includes non-snapshotted content.The reason why this happens is because DistributedFileSystem#getFileChecksum simply calculates th...
http://issues.apache.org/jira/browse/HDFS-7682    Author: Charles Lamb, 2015-03-04, 15:35
Re: How to build and run my own test code of HDFS - HDFS - [mail # dev]
...On 2/25/2015 5:35 PM, Lipeng Wan wrote:LW,If all you are doing is adding a new unit test, then just go ahead and add it. mvn test will find it. Alternatively, you can domvn test -Dtest=TestM...
   Author: Charles Lamb, 2015-02-25, 22:40
Re: Encryption At Rest Question - HDFS - [mail # dev]
...On 2/24/2015 8:56 PM, Liu, Yi A wrote:My colleague Yi is correct that data is not decrypted by the DN with one exception: WebHDFS uses the DN as the proxy and therefore the DN does the decry...
   Author: Charles Lamb, 2015-02-25, 02:59
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB