diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml index d879f14f2cd..430c1f9ae48 100644 --- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml +++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/resources/mapred-default.xml @@ -396,6 +396,22 @@ + + mapreduce.tasktracker.map.tasks.maximum + 2 + The maximum number of map tasks that will be run + simultaneously by a task tracker. + + + + + mapreduce.tasktracker.reduce.tasks.maximum + 2 + The maximum number of reduce tasks that will be run + simultaneously by a task tracker. + + + mapreduce.map.memory.mb 1024 @@ -428,6 +444,36 @@ + + mapreduce.jobtracker.retiredjobs.cache.size + 1000 + The number of retired job status to keep in the cache. + + + + + mapreduce.tasktracker.outofband.heartbeat + false + Expert: Set this to true to let the tasktracker send an + out-of-band heartbeat on task-completion for better latency. + + + + + mapreduce.jobtracker.jobhistory.lru.cache.size + 5 + The number of job history files loaded in memory. The jobs are + loaded when they are first accessed. The cache is cleared based on LRU. + + + + + mapreduce.jobtracker.instrumentation + org.apache.hadoop.mapred.JobTrackerMetricsInst + Expert: The instrumentation class to associate with each JobTracker. + + + mapred.child.java.opts -Xmx200m @@ -778,21 +824,19 @@ -<<<<<<< .working mapreduce.jobtracker.maxtasks.perjob -1 The maximum number of tasks for a single job. A value of -1 indicates that there is no maximum. -======= + mapreduce.input.lineinputformat.linespermap 1 When using NLineInputFormat, the number of lines of input data to include in each split. ->>>>>>> .merge-right.r1619626 mapreduce.client.submit.file.replication