[jira] [Created] (HDFS-1842) Cannot upgrade 0.20.203 to 0.21 with an editslog present

2011-04-15 Thread Allen Wittenauer (JIRA)
Cannot upgrade 0.20.203 to 0.21 with an editslog present Key: HDFS-1842 URL: https://issues.apache.org/jira/browse/HDFS-1842 Project: Hadoop HDFS Issue Type: Bug Components:

[jira] [Created] (HDFS-1841) Enforce read-only permissions in FUSE open()

2011-04-15 Thread Brian Bloniarz (JIRA)
Enforce read-only permissions in FUSE open() Key: HDFS-1841 URL: https://issues.apache.org/jira/browse/HDFS-1841 Project: Hadoop HDFS Issue Type: Bug Components: contrib/fuse-dfs Aff

[jira] [Created] (HDFS-1840) Terminate LeaseChecker when all writing files are closed.

2011-04-15 Thread Tsz Wo (Nicholas), SZE (JIRA)
Terminate LeaseChecker when all writing files are closed. - Key: HDFS-1840 URL: https://issues.apache.org/jira/browse/HDFS-1840 Project: Hadoop HDFS Issue Type: Improvement Co

Re: silent data loss during append

2011-04-15 Thread Tsz Wo (Nicholas), Sze
Hi Thanh, There were some known bugs in the append feature in Apache Hadoop 0.19. These bugs were fixed in both Apache 0.20-append and Apache 0.21. For Cloudera's distribution, I have no idea. You may want to ask your questions in Cloudera's mailing lists. I am sorry for the bugs. Regards,

Re: silent data loss during append

2011-04-15 Thread Thanh Do
I am using cloudera's distribution version: hadoop-0.20.2+738. On Thu, Apr 14, 2011 at 6:23 PM, Ted Dunning wrote: > What version are you using? > > > On Thu, Apr 14, 2011 at 3:55 PM, Thanh Do wrote: > >> Hi all, >> >> I have recently seen silent data loss in our system. >> Here is the case: >>

Hadoop-Hdfs-trunk - Build # 638 - Still Failing

2011-04-15 Thread Apache Hudson Server
See https://hudson.apache.org/hudson/job/Hadoop-Hdfs-trunk/638/ ### ## LAST 60 LINES OF THE CONSOLE ### [...truncated 713453 lines...] [mkdir] Created dir: /grid/0/

open a file in read and write mode simultaneously?

2011-04-15 Thread Aastha Mehta
Hello, I am trying to open a file in WRONLY | CREAT and RDONLY mode simultaneously, in HDFS. I use one handle for the first mode and another pointing to the same file in the second mode. I am not able to do so. While I believe that HDFS does allow for concurrent reads and writes. Please let me kno

Re: silent data loss during append

2011-04-15 Thread Ted Dunning
What version are you using? On Thu, Apr 14, 2011 at 3:55 PM, Thanh Do wrote: > Hi all, > > I have recently seen silent data loss in our system. > Here is the case: > > 1. client appends to some block > 2. for some reason, commitBlockSynchronization > returns successfully with synclist = [] (