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[HADOOP-15616] Incorporate Tencent Cloud COS File System Implementation - Hadoop - [issue]
...Tencent cloud is top 2 cloud vendors in China market and the object store COS ( is widely used among China’s cloud users but now it is hard for had...    Author: Junping Du , 2018-10-12, 15:52
[YARN-6055] ContainersMonitorImpl need be adjusted when NM resource changed. - YARN - [issue]
...Per Ravi's comments in YARN-4832, we need to check some limits in containerMonitorImpl to make sure it get updated also when Resource updated....    Author: Junping Du , 2018-10-04, 01:58
[HADOOP-15139] [Umbrella] Improvements and fixes for Hadoop shaded client work - Hadoop - [issue]
...In HADOOP-11656, we have made great progress in splitting out third-party dependencies from shaded hadoop client jar (hadoop-client-api), put runtime dependencies in hadoop-client-runtime, a...    Author: Junping Du , 2018-09-11, 21:34
[HDFS-12920] HDFS default value change (with adding time unit) breaks old version MR tarball work with new version (3.0) of hadoop - HDFS - [issue]
...After HADOOP-15059 get resolved. I tried to deploy 2.9.0 tar ball with 3.0.0 RC1, and run the job with following errors:2017-12-12 13:29:06,824 INFO [main] org.apache.hadoop.service.Abstract...    Author: Junping Du , 2018-09-04, 13:21
[YARN-5748] Backport YARN-5718 to branch-2 - YARN - [issue]
...In YARN-5718, we have identify several unnecessary config to over-write HDFS client behavior in several components of YARN (FSRMStore, TimelineClient, NodeLabelStore, etc.) which cause job f...    Author: Junping Du , 2018-07-10, 07:56
[YARN-4984] LogAggregationService shouldn't swallow exception in handling createAppDir() which cause thread leak. - YARN - [issue]
...Due to YARN-4325, many stale applications still exists in NM state store and get recovered after NM restart. The app initiation will get failed due to token invalid, but exception is swallow...    Author: Junping Du , 2018-06-12, 04:53
[MAPREDUCE-6680] JHS UserLogDir scan algorithm sometime could skip directory with update in CloudFS (Azure FileSystem, S3, etc.) - MapReduce - [issue]
...In our cluster based on a Cloud FileSystem, we notice JHS sometimes could skip directory with .jhist file in scanning.The behavior is like:First round scan, doesn't found .jhist file:16/04/1...    Author: Junping Du , 2018-06-05, 17:55
[HADOOP-15059] 3.0 deployment cannot work with old version MR tar ball which breaks rolling upgrade - Hadoop - [issue]
...I tried to deploy 3.0 cluster with 2.9 MR tar ball. The MR job is failed because following error:2017-11-21 12:42:50,911 INFO [main] Created M...    Author: Junping Du , 2018-05-29, 22:44
[HIVE-16532] HIVE on hadoop 3 build failed due to hdfs client/server jar separation - Hive - [issue]
...Just like TEZ-3690, hdfs-client jar separated from hadoop-hdfs will cause build failures, something like:...07:00:01 2017/04/25 14:00:00 INFO    : [INFO] Executed tasks07:00:01 201...    Author: Junping Du , 2018-05-22, 23:57
[YARN-1977] Add tests on getApplicationRequest with filtering start time range - YARN - [issue]
...There is no unit test to verify if request with start time range works to get right application list, we should add it....    Author: Junping Du , 2018-04-11, 16:14