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[HADOOP-1985] Abstract node to switch mapping into a topology service class used by namenode and jobtracker
...In order to implement switch locality in MapReduce, we need to have switch location in both the namenode and job tracker. Currently the namenode asks the data nodes for this info and t...
, 2015-08-04, 04:43
[MAPREDUCE-443] snapshot a map-reduce to DFS ... and restore
...The idea is to be able to issue a command to the job tracker thatwill halt a map-reduce and archive it to a directory in such a waythat it can later be restarted.We could also set a mode tha...
, 2014-07-18, 18:37
[HADOOP-353] Run datanode (or other hadoop servers) inside tomcat
...Barry Kaplan is running hadoop data nodes inside tomcat and encountering some issues.http://issues.apache.org/jira/browse/HADOOP-211#action_12419360I'm filing this bug to capture discussion ...
, 2014-07-18, 05:58
[HADOOP-2715] Review and document '_' prefix convention in input directories
...We use files and directories prefixed with '_' to store logs, metadata and other info that might be useful to the owner of a job within the output directory. The standard input methods...
, 2014-07-17, 21:01
[HDFS-318] Building Hadoop results in a lot of warnings
...We are getting hundreds of warnings right now. Most of these are a result of our transition to 1.5 and deprecated uses of generics. We should still fix these, since producing lot...
, 2014-07-17, 17:43
[HDFS-3699] HftpFileSystem should try both KSSL and SPNEGO when authentication is required
...See discussion in HDFS-2617 (Replaced Kerberized SSL for image transfer and fsck with SPNEGO-based solution).To handle the transition from Hadoop1.0 systems running KSSL authentication to Ha...
, 2013-10-01, 16:12
[HBASE-8016] HBase as an embeddable library, but still using HDFS
...This goes in the "strange idea" bucket... I'm looking for a tool to allow folks to store key-value data into HDFS so that hadoop companion layers & apps don't need to rely either o...
, 2013-03-08, 06:48
[MAPREDUCE-297] generalize the TT / JT servers to handle more generic tasks
...We've been discussing a proposal to generalize the TT / JT servers to handle more generic tasks and move job specific work out of the job tracker and into client code so the whole system is ...
, 2012-06-17, 10:55
[HDFS-302] DFS client warnings / info's should be centrally logged by name node
...When a client encounters an error condition that it warns / infos the user about, we should log that centrally, so that we can mine this info later. For example CRC errors or block wri...
, 2011-07-17, 19:27
[HDFS-348] When a HDFS client fails to read a block (due to server failure) the namenode should log this
...Right now only client debugging info is available. The fact that the client node needed to execute a failure mitigation strategy should be logged centrally so we can do analysis....
, 2011-07-17, 19:27
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