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Replicate closed indices #33888

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tlrx opened this issue Sep 20, 2018 · 4 comments
Closed
50 tasks done

Replicate closed indices #33888

tlrx opened this issue Sep 20, 2018 · 4 comments
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:Distributed Indexing/Distributed A catch all label for anything in the Distributed Area. Please avoid if you can. >feature Meta v7.2.0

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@tlrx
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tlrx commented Sep 20, 2018

Closed indices currently have the downside that they are not replicated, so it's possible for an index to be closed, then the data lost because the node was terminated without saving the data.

We'd like to be able to close indices to remove any memory overhead of them, but still have the indices available for replication.

Steps to accomplish this (not necessarily in order):

Routing Table

Open/Close Index APIs

Engine/Translog

Tests

Others

@tlrx tlrx added >feature :Distributed Indexing/Distributed A catch all label for anything in the Distributed Area. Please avoid if you can. labels Sep 20, 2018
@tlrx tlrx self-assigned this Sep 20, 2018
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Pinging @elastic/es-distributed

@tlrx tlrx mentioned this issue Sep 20, 2018
8 tasks
tlrx added a commit that referenced this issue Sep 26, 2018
This commit adds a new NoOpEngine implementation based on the current 
ReadOnlyEngine. This new implementation uses an empty DirectoryReader 
with no segments readers and will always returns 0 docs. The NoOpEngine 
is the default Engine created for IndexShards of closed indices. It expects 
an empty translog when it is instantiated.

Relates to #33888
tlrx added a commit that referenced this issue Oct 26, 2018
This commit adds a new NoOpEngine implementation based on the current 
ReadOnlyEngine. This new implementation uses an empty DirectoryReader 
with no segments readers and will always returns 0 docs. The NoOpEngine 
is the default Engine created for IndexShards of closed indices. It expects 
an empty translog when it is instantiated.

Relates to #33888
tlrx added a commit to tlrx/elasticsearch that referenced this issue Nov 7, 2018
…ner<Releasable>)

The current implementation of asyncBlockOperations() can be used to
execute some code once all indexing operations permits have been acquired,
 then releases all permits immediately after the code execution. This
 immediate release is not suitable for treatments that need to keep all
 permits over multiple execution steps.

This commit adds a new asyncBlockOperations() that exposes a Releasable,
 making it possible to acquire all permits and only release them all
 when needed by closing the Releasable.

This method is aimed to be used in a TransportReplicationAction that
 will acquire all permits on the primary shard.

The existing blockOperations() and asyncBlockOperations() methods have
been modified to delegate permit acquisition/releasing to this new
method.

Relates to elastic#33888
tlrx added a commit that referenced this issue Nov 8, 2018
…ner<Releasable>) (#34902)

The current implementation of asyncBlockOperations() can be used to
execute some code once all indexing operations permits have been acquired,
 then releases all permits immediately after the code execution. This
 immediate release is not suitable for treatments that need to keep all
 permits over multiple execution steps.

This commit adds a new asyncBlockOperations() that exposes a Releasable,
 making it possible to acquire all permits and only release them all
 when needed by closing the Releasable. The existing blockOperations() 
method has been modified to delegate permit acquisition/releasing to this new
method.

Relates to #33888
tlrx added a commit that referenced this issue Nov 8, 2018
This commit adds a new NoOpEngine implementation based on the current 
ReadOnlyEngine. This new implementation uses an empty DirectoryReader 
with no segments readers and will always returns 0 docs. The NoOpEngine 
is the default Engine created for IndexShards of closed indices. It expects 
an empty translog when it is instantiated.

Relates to #33888
tlrx added a commit that referenced this issue Nov 8, 2018
This commit adds a new NoOpEngine implementation based on the current 
ReadOnlyEngine. This new implementation uses an empty DirectoryReader 
with no segments readers and will always returns 0 docs. The NoOpEngine 
is the default Engine created for IndexShards of closed indices. It expects 
an empty translog when it is instantiated.

Relates to #33888
@ywelsch ywelsch added the Meta label Nov 12, 2018
pgomulka pushed a commit to pgomulka/elasticsearch that referenced this issue Nov 13, 2018
…ner<Releasable>) (elastic#34902)

The current implementation of asyncBlockOperations() can be used to
execute some code once all indexing operations permits have been acquired,
 then releases all permits immediately after the code execution. This
 immediate release is not suitable for treatments that need to keep all
 permits over multiple execution steps.

This commit adds a new asyncBlockOperations() that exposes a Releasable,
 making it possible to acquire all permits and only release them all
 when needed by closing the Releasable. The existing blockOperations() 
method has been modified to delegate permit acquisition/releasing to this new
method.

Relates to elastic#33888
tlrx added a commit that referenced this issue Nov 14, 2018
…ationAction (#35332)

Today, the TransportReplicationAction checks the global level blocks and 
the index level blocks before routing the operation to the primary, in the 
ReroutePhase, and it happens at the very beginning of the transport 
replication action execution. For the upcoming rework of the Close Index 
API and in order to deal with primary relocation, we'll need to also check 
for blocks before executing the operation on the primary (while holding a 
permit) but before routing to the new primary.

This pull request change the AsyncPrimaryAction so that it checks for 
replication action's blocks before executing the operation locally or before 
routing the primary action to the newly primary shard. The check is done 
while holding a PrimaryShardReference.

Related to #33888
tlrx added a commit that referenced this issue Nov 14, 2018
…ner<Releasable>) (#34902)

The current implementation of asyncBlockOperations() can be used to
execute some code once all indexing operations permits have been acquired,
 then releases all permits immediately after the code execution. This
 immediate release is not suitable for treatments that need to keep all
 permits over multiple execution steps.

This commit adds a new asyncBlockOperations() that exposes a Releasable,
 making it possible to acquire all permits and only release them all
 when needed by closing the Releasable. The existing blockOperations() 
method has been modified to delegate permit acquisition/releasing to this new
method.

Relates to #33888
tlrx added a commit that referenced this issue Nov 14, 2018
…ationAction (#35332)

Today, the TransportReplicationAction checks the global level blocks and
the index level blocks before routing the operation to the primary, in the
ReroutePhase, and it happens at the very beginning of the transport
replication action execution. For the upcoming rework of the Close Index
API and in order to deal with primary relocation, we'll need to also check
for blocks before executing the operation on the primary (while holding a
permit) but before routing to the new primary.

This pull request change the AsyncPrimaryAction so that it checks for
replication action's blocks before executing the operation locally or before
routing the primary action to the newly primary shard. The check is done
while holding a PrimaryShardReference.

Related to #33888
tlrx added a commit to tlrx/elasticsearch that referenced this issue Jun 25, 2019
After two recent changes (elastic#38824 and elastic#33888), the _cat/indices API
no longer report information for active recovering indices and
non-replicated closed indices. It also misreport replicated closed
indices that are potentially not authorized for the user.

This commit changes how the cat action works by first using the
Get Settings API in order to resolve authorized indices. It then uses
the Cluster State, Cluster Health and Indices Stats APIs to retrieve
 information about the indices.

Closes elastic#39933
tlrx added a commit that referenced this issue Jun 25, 2019
After two recent changes (#38824 and #33888), the _cat/indices API
no longer report information for active recovering indices and
non-replicated closed indices. It also misreport replicated closed
indices that are potentially not authorized for the user.

This commit changes how the cat action works by first using the
Get Settings API in order to resolve authorized indices. It then uses
the Cluster State, Cluster Health and Indices Stats APIs to retrieve
 information about the indices.

Closes #39933
tlrx added a commit to tlrx/elasticsearch that referenced this issue Jun 26, 2019
After two recent changes (elastic#38824 and elastic#33888), the _cat/indices API
no longer report information for active recovering indices and
non-replicated closed indices. It also misreport replicated closed
indices that are potentially not authorized for the user.

This commit changes how the cat action works by first using the
Get Settings API in order to resolve authorized indices. It then uses
the Cluster State, Cluster Health and Indices Stats APIs to retrieve
information about the indices.

Closes elastic#39933
tlrx added a commit that referenced this issue Jun 26, 2019
After two recent changes (#38824 and #33888), the _cat/indices API
no longer report information for active recovering indices and
non-replicated closed indices. It also misreport replicated closed
indices that are potentially not authorized for the user.

This commit changes how the cat action works by first using the
Get Settings API in order to resolve authorized indices. It then uses
the Cluster State, Cluster Health and Indices Stats APIs to retrieve
information about the indices.

Closes #39933
DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this issue Jan 6, 2020
Today the `InternalClusterInfoService` collects information on the sizes of
shards of open indices, but does not consider closed indices. This means that
shards of closed indices are treated as having zero size when they are being
allocated. This commit fixes this, obtaining the sizes of all shards.

Relates elastic#33888
DaveCTurner added a commit that referenced this issue Jan 6, 2020
Today the `InternalClusterInfoService` collects information on the sizes of
shards of open indices, but does not consider closed indices. This means that
shards of closed indices are treated as having zero size when they are being
allocated. This commit fixes this, obtaining the sizes of all shards.

Relates #33888
DaveCTurner added a commit that referenced this issue Jan 6, 2020
Today the `InternalClusterInfoService` collects information on the sizes of
shards of open indices, but does not consider closed indices. This means that
shards of closed indices are treated as having zero size when they are being
allocated. This commit fixes this, obtaining the sizes of all shards.

Relates #33888
SivagurunathanV pushed a commit to SivagurunathanV/elasticsearch that referenced this issue Jan 23, 2020
Today the `InternalClusterInfoService` collects information on the sizes of
shards of open indices, but does not consider closed indices. This means that
shards of closed indices are treated as having zero size when they are being
allocated. This commit fixes this, obtaining the sizes of all shards.

Relates elastic#33888
DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this issue Aug 19, 2020
Prior to elastic#33888 it is dangerous to keep closed indices in your cluster
long-term: Elasticsearch does not maintain their shard copies so they
tend to get lost as the cluster migrates to new nodes. This risk isn't
documented today. This commit addresses that gap.
DaveCTurner added a commit that referenced this issue Aug 20, 2020
Prior to #33888 it is dangerous to keep closed indices in your cluster
long-term: Elasticsearch does not maintain their shard copies so they
tend to get lost as the cluster migrates to new nodes. This risk isn't
documented today. This commit addresses that gap.
DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this issue Dec 18, 2020
Today you cannot explicitly indicate that an operation should use the
usual behaviour of waiting for active shards according to the underlying
index setting. This is a problem for the close index API which has a
default of `none` in 7.x for BWC reasons (see elastic#33888), but the usual
behaviour in 8.0: you cannot today opt-in to the 8.0 behaviour with this
parameter.

This commit adds support for the literal value `default` for the
`wait_for_active_shards` query parameter.

Relates elastic#66419
DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this issue Nov 21, 2022
This assertion fails in the presence of pre-7.2.0 closed indices because
such indices don't even have routing table entries.

Relates elastic#33888
Closes elastic#91470
elasticsearchmachine pushed a commit that referenced this issue Nov 21, 2022
This assertion fails in the presence of pre-7.2.0 closed indices because
such indices don't even have routing table entries.

Relates #33888 Closes #91470
DaveCTurner added a commit to DaveCTurner/elasticsearch that referenced this issue Nov 21, 2022
This assertion fails in the presence of pre-7.2.0 closed indices because
such indices don't even have routing table entries.

Relates elastic#33888 Closes elastic#91470
elasticsearchmachine pushed a commit that referenced this issue Nov 21, 2022
This assertion fails in the presence of pre-7.2.0 closed indices because
such indices don't even have routing table entries.

Relates #33888 Closes #91470
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