HDFS-10633. DiskBalancer : Add the description for the new setting dfs.disk.balancer.plan.threshold.percent in HDFSDiskbalancer.md. Contributed by Yiqun Lin.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/34173a42 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/34173a42 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/34173a42 Branch: refs/heads/HDFS-10285 Commit: 34173a42d450350982a99e673a36f15215c564bf Parents: 808f5d8 Author: Anu Engineer <[email protected]> Authored: Tue Nov 1 11:14:03 2016 -0700 Committer: Anu Engineer <[email protected]> Committed: Tue Nov 1 11:14:03 2016 -0700 ---------------------------------------------------------------------- .../hadoop-hdfs/src/main/resources/hdfs-default.xml | 6 ++++-- .../hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md | 1 + 2 files changed, 5 insertions(+), 2 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/34173a42/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml index e28dc54..02c36cf 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml +++ b/hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml @@ -4294,8 +4294,10 @@ <name>dfs.disk.balancer.plan.threshold.percent</name> <value>10</value> <description> - The percentage that disk tolerance that we are ok with in - a plan. + The percentage threshold value for volume Data Density in a plan. + If the absolute value of volume Data Density which is out of + threshold value in a node, it means that the volumes corresponding to + the disks should do the balancing in the plan. The default value is 10. </description> </property> http://git-wip-us.apache.org/repos/asf/hadoop/blob/34173a42/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md index dfb43b6..b7e55cb 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md +++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/HDFSDiskbalancer.md @@ -125,6 +125,7 @@ There is a set of diskbalancer settings that can be controlled via hdfs-site.xml |`dfs.disk.balancer.max.disk.throughputInMBperSec` | This controls the maximum disk bandwidth consumed by diskbalancer while copying data. If a value like 10MB is specified then diskbalancer on the average will only copy 10MB/S. The default value is 10MB/S.| |`dfs.disk.balancer.max.disk.errors`| sets the value of maximum number of errors we can ignore for a specific move between two disks before it is abandoned. For example, if a plan has 3 pair of disks to copy between , and the first disk set encounters more than 5 errors, then we abandon the first copy and start the second copy in the plan. The default value of max errors is set to 5.| |`dfs.disk.balancer.block.tolerance.percent`| The tolerance percent specifies when we have reached a good enough value for any copy step. For example, if you specify 10% then getting close to 10% of the target value is good enough.| +|`dfs.disk.balancer.plan.threshold.percent`| The percentage threshold value for volume Data Density in a plan. If the absolute value of volume Data Density which is out of threshold value in a node, it means that the volumes corresponding to the disks should do the balancing in the plan. The default value is 10.| Debugging --------- --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
