Write blocks and their metadata to different disk partitions?

2010-06-25 Thread Martin Mituzas
hi, all I hava an idea that is similar with the issue HDFS-325. I want to reduce the impact of disk racingwhen read HDFS files. From HDFS code, I know read a block will also need access its metadata file. I guess there may be some contention for reading both files from a same disk. So I plan to

[jira] Created: (HADOOP-6839) [Herriot] Implement a functionality for getting the user list for creating proxy users.

2010-06-25 Thread Vinay Kumar Thota (JIRA)
[Herriot] Implement a functionality for getting the user list for creating proxy users. --- Key: HADOOP-6839 URL: https://issues.apache.org/jira/browse/HADOOP-6839

Hadoop S3FileSystem timestamps

2010-06-25 Thread Vladimir Orlov
Hi All, Does anybody know why Hadoop S3FileSystem doesn't set correctly file modification time when a new file is created? Is it somehow technically limited or just a bug? How can I set correct timestamp for a new file/folder from Hadoop Job on EMR if a file is on S3? Best regards,

[jira] Created: (HADOOP-6840) Support non-recursive create() in SequenceFile.Writer

2010-06-25 Thread Nicolas Spiegelberg (JIRA)
Support non-recursive create() in SequenceFile.Writer - Key: HADOOP-6840 URL: https://issues.apache.org/jira/browse/HADOOP-6840 Project: Hadoop Common Issue Type: Improvement

[jira] Created: (HADOOP-6841) In Quick Start, mention requirement that HADOOP_HOME needs to be set

2010-06-25 Thread Steve McCarthy (JIRA)
In Quick Start, mention requirement that HADOOP_HOME needs to be set Key: HADOOP-6841 URL: https://issues.apache.org/jira/browse/HADOOP-6841 Project: Hadoop Common Issue

[jira] Created: (HADOOP-6842) hadoop fs -text does not give a useful text representation of MapWritable objects

2010-06-25 Thread Steven Wong (JIRA)
hadoop fs -text does not give a useful text representation of MapWritable objects --- Key: HADOOP-6842 URL: https://issues.apache.org/jira/browse/HADOOP-6842 Project:

[jira] Created: (HADOOP-6843) Entries in the FileSystem's Cache could be cleared when they are not used

2010-06-25 Thread Devaraj Das (JIRA)
Entries in the FileSystem's Cache could be cleared when they are not used - Key: HADOOP-6843 URL: https://issues.apache.org/jira/browse/HADOOP-6843 Project: Hadoop Common