which parameters can jobs use differently in the same cluster?

Hi, I see "Shuffle and Sort Configuration Tuning" in "Hadoop---The Definitive Guide", which told me that each job in the same cluster can use different parameters below without restart the cluster. But some of my partner told me not. For some reason I have no Linux cluster at hand. I wonder whe

[jira] Created: (MAPREDUCE-1856) Extract a subset of tests for smoke (DOA) validation

Extract a subset of tests for smoke (DOA) validation Key: MAPREDUCE-1856 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1856 Project: Hadoop Map/Reduce Issue Type: Improvement

[jira] Resolved: (MAPREDUCE-1795) add error option if file-based record-readers fail to consume all input (e.g., concatenated gzip, bzip2)

[ https://issues.apache.org/jira/browse/MAPREDUCE-1795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Greg Roelofs resolved MAPREDUCE-1795. - Resolution: Won't Fix Per previous comment, we're going to fix the underlying issue i

[jira] Created: (MAPREDUCE-1855) refreshSuperUserGroupsConfiguration for MR should use server side configuration for the refresh (for HADOOP-6815)

refreshSuperUserGroupsConfiguration for MR should use server side configuration for the refresh (for HADOOP-6815) - Key: MAPREDUCE-1855 URL: https://is

[jira] Created: (MAPREDUCE-1854) [herriot] Automate health script system test

[herriot] Automate health script system test Key: MAPREDUCE-1854 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1854 Project: Hadoop Map/Reduce Issue Type: New Feature Components:

Re: Cannot initialize JVM Metrics with processName

Moving this over from the users list. I've been digging a little deeper. In MultipleOutputs there is private TaskAttemptContext getContext(String nameOutput) throws IOException { // The following trick leverages the instantiation of a record writer via // the job thus supporting arbitrary

[jira] Created: (MAPREDUCE-1853) MultipleOutputs does not cache TaskAttemptContext

MultipleOutputs does not cache TaskAttemptContext - Key: MAPREDUCE-1853 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1853 Project: Hadoop Map/Reduce Issue Type: Bug Affects Versions