@@ -4407,27 +4407,27 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDonorMoveChunkStarted
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- The total number of times that the :dbcommand:`moveChunk` command
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- or :dbcommand:`moveRange` have started on the shard, of which this
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- node is a member, as part of a :ref:`range migration process
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- <range-migration-procedure>`. This increasing number does not
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+ The total number of times that MongoDB starts the
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+ :dbcommand:`moveChunk` command or :dbcommand:`moveRange` command on
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+ the primary node of the shard as part of the :ref:`range migration
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+ procedure <range-migration-procedure>`. This increasing number does not
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consider whether the chunk migrations succeed or not.
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*Only present when run on a shard.*
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.. serverstatus:: shardingStatistics.countDonorMoveChunkCommitted
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- Total number of chunk migrations committed on the shard, of which
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- the current node is a member .
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+ The total number of chunk migrations that MongoDB commits on the
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+ primary node of the shard .
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.. include:: /includes/chunk-migrations.rst
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.. include:: /includes/chunk-migrations-version-list.rst
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.. serverstatus:: shardingStatistics.countDonorMoveChunkAborted
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- Total number of chunk migrations aborted on the shard, of which the
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- current node is a member.
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+ The total number of chunk migrations that MongoDB aborts on the
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+ primary node of the shard.
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.. include:: /includes/chunk-migrations.rst
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@@ -4447,32 +4447,30 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.totalDonorChunkCloneTimeMillis
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- The cumulative time, in milliseconds, taken by the :ref:`clone phase
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- of the range migrations <range-migration-procedure>` from this
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- shard, of which this node is a member. Specifically, for each
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- migration from this shard, the tracked time starts with the
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- :dbcommand:`moveRange` and :dbcommand:`moveChunk` commands and ends
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- before the destination shard enters a ``catchup`` phase to apply
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- changes that occurred during the :ref:`range migrations
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- <range-migration-procedure>`.
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+ The cumulative time, in milliseconds, that the :ref:`clone phase of
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+ the range migration procedure <range-migration-procedure>` takes on
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+ the primary node of the shard. Specifically, for each migration on
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+ this shard, the tracked time starts with the :dbcommand:`moveRange`
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+ and :dbcommand:`moveChunk` commands and ends before the destination
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+ shard enters a ``catchup`` phase to apply changes that occurred
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+ during the :ref:`range migration procedure <range-migration-procedure>`.
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*Only present when run on a shard.*
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.. serverstatus:: shardingStatistics.totalCriticalSectionCommitTimeMillis
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- The cumulative time, in milliseconds, taken by the :ref:`update
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- metadata phase of the range migrations <range-migration-procedure>`
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- from this shard, of which this node is a member . During the update
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- metadata phase, all operations on the collection are blocked .
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+ The cumulative time, in milliseconds, that the :ref:`update metadata
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+ phase of the range migrations procedure <range-migration-procedure>`
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+ takes on the primary node of the shard . During the update metadata
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+ phase, MongoDB blocks all operations on the collection.
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*Only present when run on a shard.*
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.. serverstatus:: shardingStatistics.totalCriticalSectionTimeMillis
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- The cumulative time, in milliseconds, taken by the :ref:`catch-up
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- phase and the update metadata phase of the range migrations
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- <range-migration-procedure>` from this shard, of which this node is
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- a member.
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+ The cumulative time, in milliseconds, that the :ref:`catch-up
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+ phase and the update metadata phase of the range migration procedure
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+ <range-migration-procedure>` takes on the primary node of the shard.
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To calculate the duration of the catch-up phase, subtract
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:serverstatus:`~shardingStatistics.totalCriticalSectionCommitTimeMillis` from
@@ -4486,20 +4484,18 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDocsClonedOnRecipient
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- Cumulative, always-increasing count of documents that have been
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- cloned on this member where it acted as the primary of the recipient
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- shard.
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+ The cumulative, always-increasing count of documents that MongoDB
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+ clones on the primary node of the recipient shard.
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*Only present when run on a shard.*
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.. versionadded:: 4.2
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.. serverstatus:: shardingStatistics.countBytesClonedOnRecipient
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- Cumulative number of bytes cloned on the current member node during a
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- :ref:`range migration procedure <range-migration-procedure>`, where
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- the current member node acted as the primary node for the recipient
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- shard.
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+ The cumulative number of bytes that MongoDB clones on the primary
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+ node of the recipient shard during the :ref:`range migration procedure
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+ <range-migration-procedure>`.
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.. include:: /includes/chunk-migrations-data-copy.rst
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@@ -4509,10 +4505,9 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDocsClonedOnCatchUpOnRecipient
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- Cumulative number of documents cloned on the current member node
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- during the catch-up phase of a :ref:`range migration procedure
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- <range-migration-procedure>`, where the current member node acted as
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- the primary node for the recipient shard.
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+ The cumulative number of documents that MongoDB clones on the primary
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+ node of the recipient shard during the catch-up phase of the
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+ :ref:`range migration procedure <range-migration-procedure>`.
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.. include:: /includes/chunk-migrations-data-copy.rst
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@@ -4522,10 +4517,9 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countBytesClonedOnCatchUpOnRecipient
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- Cumulative number of bytes cloned on the current member node during
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- the catch-up phase of a :ref:`range migration procedure
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- <range-migration-procedure>`, where the current member node acted as
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- the primary node for the recipient shard.
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+ The cumulative number of bytes that MongoDB clones on the primary
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+ node of the recipient shard during the catch-up phase of the
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+ :ref:`range migration procedure <range-migration-procedure>`.
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.. include:: /includes/chunk-migrations-data-copy.rst
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@@ -4535,9 +4529,8 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDocsClonedOnDonor
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- Cumulative, always-increasing count of documents that haves been
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- cloned on this member where it acted as the primary of the donor
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- shard.
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+ The cumulative, always-increasing count of documents that MongoDB
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+ clones on the primary node of the donor shard.
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*Only present when run on a shard.*
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@@ -4555,9 +4548,9 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDocsDeletedByRangeDeleter
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- Cumulative , always-increasing count of documents that have been
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- deleted on this member during chunk migration where the member acted
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- as the primary of the donor shard.
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+ The cumulative , always-increasing count of documents that MongoDB
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+ deletes on the primary node of the donor shard during chunk
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+ migration.
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*Only present when run on a shard.*
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@@ -4567,9 +4560,9 @@ shardingStatistics
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.. serverstatus:: shardingStatistics.countDonorMoveChunkLockTimeout
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- Cumulative , always-increasing count of chunk migrations that were
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- aborted due to lock acquisition timeouts, where the member acted as
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- the primary of the donor shard .
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+ The cumulative , always-increasing count of chunk migrations that MongoDB
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+ aborts on the primary node of the donor shard due to lock acquisition
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+ timeouts .
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*Only present when run on a shard.*
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@@ -4646,7 +4639,7 @@ shardingStatistics
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The current total of the queued chunk range deletion tasks that are
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ready to run or are running as part of the :ref:`range migration
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- process <range-migration-procedure>`.
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+ procedure <range-migration-procedure>`.
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Inspect the documents in the :data:`config.rangeDeletions` collection
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for information about the chunk ranges pending deletion from a shard
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