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[MAPREDUCE-7050] Debug logs should be improvement - MapReduce - [issue]
...I noticed that in Mapreduced code, there are many places to use Log.debug as follows:LOG.debug("example " + example.getClass().getName() + "example" );When the system loglevel set higher tha...
http://issues.apache.org/jira/browse/MAPREDUCE-7050    Author: Sen Zhao , 2018-02-27, 09:38
[MAPREDUCE-6956] FileOutputCommitter to gain abstract superclass PathOutputCommitter - MapReduce - [issue]
...This is the initial step of MAPREDUCE-6823, which proposes a factory behind FileOutputFormat to create different committers for different filesystems, if so configured..This patch simply add...
http://issues.apache.org/jira/browse/MAPREDUCE-6956    Author: Steve Loughran , 2018-02-26, 15:03
[MAPREDUCE-6961] Pull up FileOutputCommitter.getOutputPath to PathOutputCommitter - MapReduce - [issue]
...SPARK-21549 has shown that downstream code is relying on the internal property if we pulled FileOutputCommitter.getOutputPath to the PathOutputCommitter of MAPREDUCE-6956, then there'd be a ...
http://issues.apache.org/jira/browse/MAPREDUCE-6961    Author: Steve Loughran , 2018-02-26, 14:56
[MAPREDUCE-6954] Disable erasure coding for files that are uploaded to the MR staging area - MapReduce - [issue]
...Depending on the encoder/decoder used and the type or MR workload, EC might negatively affect the performance of an MR job if too many files are localized.In such a scenario, users might wan...
http://issues.apache.org/jira/browse/MAPREDUCE-6954    Author: Peter Bacsko , 2018-02-26, 14:14
[MAPREDUCE-7027] HadoopArchiveLogs shouldn't delete the original logs if the HAR creation fails - MapReduce - [issue]
...If the hadoop archive command fails for any reason (for example because of an OutOfMemoryError) the HadoopArchiveLogs tool will still delete the original log files, so all the logs will be l...
http://issues.apache.org/jira/browse/MAPREDUCE-7027    Author: Gergely Novák , 2018-02-23, 22:57
[expand - 6 more] - [VOTE] Release Apache Hadoop 3.0.1 (RC0) - MapReduce - [mail # dev]
...Hi, AllThank you so much for the votes so far!I will make a new RC1 in the next few days to include the latestfixes. Please wait and vote for the new RC1.Best regards,On Thu, Feb 22, 2018 at...
   Author: Lei Xu , Brahma Reddy Battula , ... , 2018-02-23, 02:32
[expand - 21 more] - [DISCUSSION] Merging HDFS-7240 Object Store (Ozone) to trunk - MapReduce - [mail # dev]
...Hi Sanjay,With respect to Ozone my two main concerns were:1. Wether Ozone can help scaling out the namespace service in handlinghigher RPC workloads.I think we came to common conclusion that...
   Author: Konstantin Shvachko , sanjay Radia , ... , 2018-02-23, 00:20
[MAPREDUCE-7058] Race Condition When Stopping DelegationTokenRenewer - MapReduce - [issue]
...https://github.com/apache/hadoop/blob/69fa81679f59378fd19a2c65db8019393d7c05a2/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/...
http://issues.apache.org/jira/browse/MAPREDUCE-7058    Author: BELUGA BEHR , 2018-02-22, 22:33
[MAPREDUCE-7046] Enhance logging related to retrieving Job - MapReduce - [issue]
...We recently encountered an interesting problem. In one case, Hive Driver was unable to retrieve the status of a MapReduce job. The following stack trace was printed:[main] INFO  org.apa...
http://issues.apache.org/jira/browse/MAPREDUCE-7046    Author: Peter Bacsko , 2018-02-21, 23:17
[MAPREDUCE-7056] Ensure that mapreduce.job.reduces is not negative - MapReduce - [issue]
...Recently we've seen a strange problem that was related to mapreduce.job.reduces being set to -1. If this value is negative, two things can happen:1. If we use the old API, then the mappers w...
http://issues.apache.org/jira/browse/MAPREDUCE-7056    Author: Peter Bacsko , 2018-02-20, 15:46