fixed hdfs-default.xml for block report load balancing
</description>
</property>
- <property>
- <name>dfs.block.report.load.balancing.time.window.size</name>
- <value>60000</value>
- <description>
- Window of time to compute NN threashold for block reporting
- </description>
- </property>
-
<property>
<name>dfs.block.report.load.balancing.db.var.update.threashold</name>
<value>60000</value>
<description>
- Number of blocks that can be reported to a NN during the load balancing
- window.
+ Update frequency of the variable indicating the number of concurrent
+ block reports processed by the namenodes (for online update purpose).
</description>
</property>
<property>
- <name>dfs.cache.report.load.balancing.time.window.size</name>
- <value>60000</value>
+ <name>dfs.block.report.load.balancer.max.concurrent.block.reports</name>
+ <value>5</value>
<description>
- Window of time to compute NN threashold for cache reporting
+ Number of concurrent block reports that the namenodes can process
</description>
</property>
<property>
- <name>dfs.cache.report.load.balancing.db.var.update.threashold</name>
- <value>60000</value>
+ <name>dfs.block.report.load.balancing.max.block.report.processing.time</name>
+ <value>3600000</value>
<description>
- Number of cache blocks that can be reported to a NN during the load balancing window.
+ Max expected processing time of a block report. Dead datanodes may fail before the
+ block report is fully processed. After dfs.block.report.load.balancing.max.block.report.processing.time
+ the block reprot is considered completed/failed.
</description>
</property>
+
</configuration>
