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[MAPREDUCE-7144] Speculative execution can cause race condition - MapReduce - [issue]
...In our internal build environment, we observed that the test case TestMRIntermediateDataEncryption#testMultipleReducers was flaky and failed randomly on multiple branches.After a long invest...    Author: Peter Bacsko , 2019-02-22, 13:46
[MAPREDUCE-7186] JobSubmitter#checkSpecs doesn not handle the situation when reduceNums is set less than zero. - MapReduce - [issue]
...JobSubmitter#checkSpecs doesn not judge whether reduceNums is less than zero.private void checkSpecs(Job job) throws ClassNotFoundException, InterruptedException, IOException { JobConf jConf...    Author: Hongyuan Li , 2019-02-22, 13:12
[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...    Author: Peter Bacsko , 2019-02-22, 11:22
[MAPREDUCE-7112] When load job history webpage we do not need make cache firstly - MapReduce - [issue]
...It's very slow to load job history page because of making cache firstly. Obviously, we should skip this....    Author: Zhaohui Xin , 2019-02-19, 16:00
[MAPREDUCE-7184] TestJobCounters byte counters omitting crc file bytes read - MapReduce - [issue]
...TestJobCounters test cases are failing in trunk while validating the input files size with BYTES_READ by the job. The crc files are considered in getFileSize whereas the job FileInputFormat ...    Author: Prabhu Joseph , 2019-02-19, 14:17
[MAPREDUCE-7178] NPE while YarnChild shudown - MapReduce - [issue]
...In YarnChild.maintry{ logSyncer = TaskLog.createLogSyncer();//line 168 ...., umbilical); //line 178}catch (Exception exception) {//line 187  LOG.warn("E...    Author: lujie , 2019-02-17, 07:16
[MAPREDUCE-7169] Speculative attempts should not run on the same node - MapReduce - [issue]
...         I found in all versions of yarn, Speculative Execution may set the speculative task to the node of  original task.What i have read is only it will try ...    Author: Lee chen , 2019-02-17, 03:08
[expand - 5 more] - Including Original Author in git commits. - MapReduce - [mail # dev]
...+1. I think formatted patches and PRs will be an improvement.  I've usedthe git --committer thing a couple of times here without issue.Another unrelated improvement with github is handl...
   Author: Aaron Fabbri , Steve Loughran , ... , 2019-02-14, 23:00
[DISCUSS] Removal of old hamlet package in 3.3+ or 3.4+ - MapReduce - [mail # dev]
...Thanks Masatake for your comments.Added the other Hadoop mailing lists to Cc.> I'm +1 on making imcompatible change if this blocks another Java migration issues, while I don't see strong ...
   Author: Akira Ajisaka , 2019-02-14, 06:19
[MAPREDUCE-5890] Support for encrypting Intermediate data and spills in local filesystem - MapReduce - [issue]
...For some sensitive data, encryption while in flight (network) is not sufficient, it is required that while at rest it should be encrypted. HADOOP-10150 & HDFS-6134 bring encryption at re...    Author: Alejandro Abdelnur , 2019-02-12, 19:29