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Mon, 18 Jul 2016 14:27:54 +0000 Received: by git1-us-west.apache.org (ASF Mail Server at git1-us-west.apache.org, from userid 33) id 1A2EADF99D; Mon, 18 Jul 2016 14:27:54 +0000 (UTC) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: dmitriusan@apache.org To: commits@ambari.apache.org Date: Mon, 18 Jul 2016 14:27:56 -0000 Message-Id: <60baac72112d43dcbff4aa02532da6b4@git.apache.org> In-Reply-To: <6f5842431db54b82ba819ae01237fc70@git.apache.org> References: <6f5842431db54b82ba819ae01237fc70@git.apache.org> X-Mailer: ASF-Git Admin Mailer Subject: [3/4] ambari git commit: AMBARI-17769. property_description is null for some properties in config page (dlysnichenko) archived-at: Mon, 18 Jul 2016 14:27:56 -0000 AMBARI-17769. property_description is null for some properties in config page (dlysnichenko) Project: http://git-wip-us.apache.org/repos/asf/ambari/repo Commit: http://git-wip-us.apache.org/repos/asf/ambari/commit/9c6e02a2 Tree: http://git-wip-us.apache.org/repos/asf/ambari/tree/9c6e02a2 Diff: http://git-wip-us.apache.org/repos/asf/ambari/diff/9c6e02a2 Branch: refs/heads/trunk Commit: 9c6e02a256ceb1f8ba090fcbd7ac136e9a94b07a Parents: 330038d Author: Lisnichenko Dmitro Authored: Mon Jul 18 17:26:44 2016 +0300 Committer: Lisnichenko Dmitro Committed: Mon Jul 18 17:26:44 2016 +0300 ---------------------------------------------------------------------- .../services/HDFS/configuration/core-site.xml | 4 ++- .../services/HDFS/configuration/hdfs-site.xml | 13 +++++++++- .../YARN/configuration/capacity-scheduler.xml | 6 +++++ .../services/YARN/configuration/yarn-site.xml | 26 ++++++++++++++++--- .../YARN/configuration/capacity-scheduler.xml | 6 +++++ .../services/YARN/configuration/yarn-site.xml | 22 +++++++++++++--- .../services/HDFS/configuration/hdfs-site.xml | 8 ++++++ .../services/YARN/configuration/yarn-site.xml | 19 ++++++++++++++ .../YARN/configuration/capacity-scheduler.xml | 1 + .../services/YARN/configuration/yarn-site.xml | 2 ++ .../services/HDFS/configuration/core-site.xml | 4 ++- .../services/HDFS/configuration/hdfs-site.xml | 9 ++++++- .../YARN/configuration/capacity-scheduler.xml | 6 +++++ .../services/YARN/configuration/yarn-site.xml | 27 +++++++++++++++++--- .../services/HDFS/configuration/hdfs-site.xml | 8 ++++++ .../services/HDFS/configuration/core-site.xml | 4 ++- .../services/HDFS/configuration/hdfs-site.xml | 9 ++++++- 17 files changed, 156 insertions(+), 18 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml index fdb7ce3..846b09e 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/core-site.xml @@ -21,7 +21,9 @@ hadoop.http.authentication.simple.anonymous.allowed true - + + Indicates if anonymous requests are allowed when using 'simple' authentication. + http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml index adcd9c8..aad524d 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.2/services/HDFS/configuration/hdfs-site.xml @@ -21,7 +21,14 @@ dfs.namenode.startup.delay.block.deletion.sec 3600 - + + The delay in seconds at which we will pause the blocks deletion + after Namenode startup. By default it's disabled. + In the case a directory has large number of directories and files are + deleted, suggested delay is one hour to give the administrator enough time + to notice large number of pending deletion blocks and take corrective + action. + @@ -44,6 +51,10 @@ dfs.encryption.key.provider.uri + + The KeyProvider to use when interacting with encryption keys used + when reading and writing to an encryption zone. + true http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/capacity-scheduler.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/capacity-scheduler.xml b/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/capacity-scheduler.xml index 90e64b0..084b3c2 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/capacity-scheduler.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/capacity-scheduler.xml @@ -18,6 +18,12 @@ yarn.scheduler.capacity.resource-calculator + + The ResourceCalculator implementation to be used to compare Resources in the scheduler. + The default i.e. org.apache.hadoop.yarn.util.resource.DefaultResourseCalculator only uses + Memory while DominantResourceCalculator uses Dominant-resource to compare multi-dimensional + resources such as Memory, CPU etc. A Java ResourceCalculator class name is expected. + org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator CPU Scheduling http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/yarn-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/yarn-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/yarn-site.xml index fd0cb3e..fcd9380 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/yarn-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.2/services/YARN/configuration/yarn-site.xml @@ -240,7 +240,14 @@ yarn.nodemanager.resource.cpu-vcores 8 - + Number of vcores that can be allocated + for containers. This is used by the RM scheduler when allocating + resources for containers. This is not used to limit the number of + CPUs used by YARN containers. If it is set to -1 and + yarn.nodemanager.resource.detect-hardware-capabilities is true, it is + automatically determined from the hardware in case of Windows and Linux. + In other cases, number of vcores is 8 by default. + Number of virtual cores int @@ -277,7 +284,11 @@ yarn.node-labels.fs-store.retry-policy-spec 2000, 500 - + + Retry policy used for FileSystem node label store. The policy is + specified by N pairs of sleep-time in milliseconds and number-of-retries + "s1,n1,s2,n2,...". + @@ -322,7 +333,7 @@ yarn.resourcemanager.system-metrics-publisher.dispatcher.pool-size 10 - + Number of worker threads that send the yarn system metrics data. @@ -451,7 +462,9 @@ yarn.node-labels.fs-store.root-dir /system/yarn/node-labels - + + URI for NodeLabelManager. + @@ -556,6 +569,11 @@ yarn.resourcemanager.scheduler.monitor.enable + + Enable a set of periodic monitors (specified in + yarn.resourcemanager.scheduler.monitor.policies) that affect the + scheduler. + false Pre-emption http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/capacity-scheduler.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/capacity-scheduler.xml b/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/capacity-scheduler.xml index 2ce0d25..40748a2 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/capacity-scheduler.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/capacity-scheduler.xml @@ -18,6 +18,12 @@ yarn.scheduler.capacity.resource-calculator + + The ResourceCalculator implementation to be used to compare Resources in the scheduler. + The default i.e. org.apache.hadoop.yarn.util.resource.DefaultResourseCalculator only uses + Memory while DominantResourceCalculator uses Dominant-resource to compare multi-dimensional + resources such as Memory, CPU etc. A Java ResourceCalculator class name is expected. + org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/yarn-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/yarn-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/yarn-site.xml index 0eb515c..d029694 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/yarn-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.3.GlusterFS/services/YARN/configuration/yarn-site.xml @@ -206,7 +206,15 @@ yarn.nodemanager.resource.cpu-vcores 8 - + + Number of vcores that can be allocated + for containers. This is used by the RM scheduler when allocating + resources for containers. This is not used to limit the number of + CPUs used by YARN containers. If it is set to -1 and + yarn.nodemanager.resource.detect-hardware-capabilities is true, it is + automatically determined from the hardware in case of Windows and Linux. + In other cases, number of vcores is 8 by default. + Total NM CPU vCores available to Containers int @@ -236,7 +244,11 @@ yarn.node-labels.fs-store.retry-policy-spec 2000, 500 - + + Retry policy used for FileSystem node label store. The policy is + specified by N pairs of sleep-time in milliseconds and number-of-retries + "s1,n1,s2,n2,...". + @@ -281,7 +293,7 @@ yarn.resourcemanager.system-metrics-publisher.dispatcher.pool-size 10 - + Number of worker threads that send the yarn system metrics data. @@ -381,7 +393,9 @@ yarn.node-labels.fs-store.root-dir /system/yarn/node-labels - + + URI for NodeLabelManager. + http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.3/services/HDFS/configuration/hdfs-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.3/services/HDFS/configuration/hdfs-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.3/services/HDFS/configuration/hdfs-site.xml index d221143..1c4076e 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.3/services/HDFS/configuration/hdfs-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.3/services/HDFS/configuration/hdfs-site.xml @@ -36,6 +36,14 @@ nfs.exports.allowed.hosts * rw + + By default, the export can be mounted by any client. To better control the access, + users can update the following property. The value string contains machine name and access privilege, + separated by whitespace characters. Machine name format can be single host, wildcards, and IPv4 + networks.The access privilege uses rw or ro to specify readwrite or readonly access of the machines + to exports. If the access privilege is not provided, the default is read-only. Entries are separated + by ";". For example: "192.168.0.0/22 rw ; host*.example.com ; host1.test.org ro;". + Allowed hosts http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml index 463f80e..68f0e04 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.3/services/YARN/configuration/yarn-site.xml @@ -25,6 +25,10 @@ yarn.timeline-service.recovery.enabled + + Enable timeline server to recover state after starting. If + true, then yarn.timeline-service.state-store-class must be specified. + true @@ -97,24 +101,39 @@ yarn.timeline-service.entity-group-fs-store.summary-store + Summary storage for ATS v1.5 org.apache.hadoop.yarn.server.timeline.RollingLevelDBTimelineStore yarn.timeline-service.entity-group-fs-store.scan-interval-seconds + + Scan interval for ATS v1.5 entity group file system storage reader.This + value controls how frequent the reader will scan the HDFS active directory + for application status. + 60 yarn.timeline-service.entity-group-fs-store.cleaner-interval-seconds + + Scan interval for ATS v1.5 entity group file system storage cleaner.This + value controls how frequent the reader will scan the HDFS done directory + for stale application data. + 3600 yarn.timeline-service.entity-group-fs-store.retain-seconds + + How long the ATS v1.5 entity group file system storage will keep an + application's data in the done directory. + 604800 http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/capacity-scheduler.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/capacity-scheduler.xml b/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/capacity-scheduler.xml index adfa4af..9ff8484 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/capacity-scheduler.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/capacity-scheduler.xml @@ -18,6 +18,7 @@ capacity-scheduler + Enter key=value (one per line) for all properties of capacity-scheduler.xml hive-interactive-env http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/yarn-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/yarn-site.xml b/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/yarn-site.xml index f1b73dc..ea7a7af 100644 --- a/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/yarn-site.xml +++ b/ambari-server/src/main/resources/stacks/HDP/2.5/services/YARN/configuration/yarn-site.xml @@ -32,11 +32,13 @@ yarn.nodemanager.aux-services.spark_shuffle.classpath {{stack_root}}/${hdp.version}/spark/aux/* + The auxiliary service classpath to use for Spark yarn.nodemanager.aux-services.spark2_shuffle.classpath {{stack_root}}/${hdp.version}/spark2/aux/* + The auxiliary service classpath to use for Spark 2 http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/core-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/core-site.xml b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/core-site.xml index fb46b74..2ff95c0 100644 --- a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/core-site.xml +++ b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/core-site.xml @@ -21,7 +21,9 @@ hadoop.http.authentication.simple.anonymous.allowed true - + + Indicates if anonymous requests are allowed when using 'simple' authentication. + http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/hdfs-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/hdfs-site.xml b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/hdfs-site.xml index caa977f..89254b4 100644 --- a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/hdfs-site.xml +++ b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/HDFS/configuration/hdfs-site.xml @@ -21,7 +21,14 @@ dfs.namenode.startup.delay.block.deletion.sec 3600 - + + The delay in seconds at which we will pause the blocks deletion + after Namenode startup. By default it's disabled. + In the case a directory has large number of directories and files are + deleted, suggested delay is one hour to give the administrator enough time + to notice large number of pending deletion blocks and take corrective + action. + http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/capacity-scheduler.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/capacity-scheduler.xml b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/capacity-scheduler.xml index 6a957c0..5483c97 100644 --- a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/capacity-scheduler.xml +++ b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/capacity-scheduler.xml @@ -19,6 +19,12 @@ yarn.scheduler.capacity.resource-calculator org.apache.hadoop.yarn.util.resource.DefaultResourceCalculator + + The ResourceCalculator implementation to be used to compare Resources in the scheduler. + The default i.e. org.apache.hadoop.yarn.util.resource.DefaultResourseCalculator only uses + Memory while DominantResourceCalculator uses Dominant-resource to compare multi-dimensional + resources such as Memory, CPU etc. A Java ResourceCalculator class name is expected. + CPU Scheduling value-list http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/yarn-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/yarn-site.xml b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/yarn-site.xml index 62c5693..8b3db83 100644 --- a/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/yarn-site.xml +++ b/ambari-server/src/main/resources/stacks/HDPWIN/2.2/services/YARN/configuration/yarn-site.xml @@ -210,7 +210,15 @@ yarn.nodemanager.resource.cpu-vcores 8 - + + Number of vcores that can be allocated + for containers. This is used by the RM scheduler when allocating + resources for containers. This is not used to limit the number of + CPUs used by YARN containers. If it is set to -1 and + yarn.nodemanager.resource.detect-hardware-capabilities is true, it is + automatically determined from the hardware in case of Windows and Linux. + In other cases, number of vcores is 8 by default. + Number of virtual cores int @@ -247,7 +255,11 @@ yarn.node-labels.fs-store.retry-policy-spec 2000, 500 - + + Retry policy used for FileSystem node label store. The policy is + specified by N pairs of sleep-time in milliseconds and number-of-retries + "s1,n1,s2,n2,...". + @@ -292,7 +304,7 @@ yarn.resourcemanager.system-metrics-publisher.dispatcher.pool-size 10 - + Number of worker threads that send the yarn system metrics data. @@ -392,7 +404,9 @@ yarn.node-labels.fs-store.root-dir /system/yarn/node-labels - + + URI for NodeLabelManager. + @@ -458,6 +472,11 @@ yarn.resourcemanager.scheduler.monitor.enable + + Enable a set of periodic monitors (specified in + yarn.resourcemanager.scheduler.monitor.policies) that affect the + scheduler. + false Pre-emption http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/HDPWIN/2.3/services/HDFS/configuration/hdfs-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/HDPWIN/2.3/services/HDFS/configuration/hdfs-site.xml b/ambari-server/src/main/resources/stacks/HDPWIN/2.3/services/HDFS/configuration/hdfs-site.xml index 41590b6..d7348b0 100644 --- a/ambari-server/src/main/resources/stacks/HDPWIN/2.3/services/HDFS/configuration/hdfs-site.xml +++ b/ambari-server/src/main/resources/stacks/HDPWIN/2.3/services/HDFS/configuration/hdfs-site.xml @@ -32,6 +32,14 @@ nfs.exports.allowed.hosts + + By default, the export can be mounted by any client. To better control the access, + users can update the following property. The value string contains machine name and access privilege, + separated by whitespace characters. Machine name format can be single host, wildcards, and IPv4 + networks.The access privilege uses rw or ro to specify readwrite or readonly access of the machines + to exports. If the access privilege is not provided, the default is read-only. Entries are separated + by ";". For example: "192.168.0.0/22 rw ; host*.example.com ; host1.test.org ro;". + * rw Allowed hosts http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml b/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml index ab67a5b..4f18611 100644 --- a/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml +++ b/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/core-site.xml @@ -21,7 +21,9 @@ hadoop.http.authentication.simple.anonymous.allowed true - + + Indicates if anonymous requests are allowed when using 'simple' authentication. + http://git-wip-us.apache.org/repos/asf/ambari/blob/9c6e02a2/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml ---------------------------------------------------------------------- diff --git a/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml b/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml index df2c591..0fed58d 100644 --- a/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml +++ b/ambari-server/src/main/resources/stacks/PHD/3.0/services/HDFS/configuration/hdfs-site.xml @@ -21,7 +21,14 @@ dfs.namenode.startup.delay.block.deletion.sec 3600 - + + The delay in seconds at which we will pause the blocks deletion + after Namenode startup. By default it's disabled. + In the case a directory has large number of directories and files are + deleted, suggested delay is one hour to give the administrator enough time + to notice large number of pending deletion blocks and take corrective + action. +