Document #73456 as a known issue (#73471)

Adds docs to the release notes for 7.9.0-7.13.0 recording #73456 as a known issue.
elastic · May 27, 2021 · c86e447 · c86e447
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diff --git a/docs/reference/release-notes/7.10.asciidoc b/docs/reference/release-notes/7.10.asciidoc
@@ -15,6 +15,20 @@ All versions of {es} between 7.7.0 and 7.10.1 are affected by this flaw.
 You must upgrade to {es} version 7.10.2 to obtain the fix.
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22132[CVE-2021-22132]
 
+[[known-issues-7.10.2]]
+[discrete]
+=== Known issues
+
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[bug-7.10.2]]
 [float]
 === Bug fixes
@@ -91,6 +105,16 @@ Also see <<breaking-changes-7.10,Breaking changes in 7.10>>.
 ** With nested `inner_hits`, the fast vector highlighter may load snippets from the wrong document. ({es-issue}65533[#65533])
 ** When _source is disabled, we can fail load nested `inner_hits` and `top_hits`. ({es-issue}66572[#66572])
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[bug-7.10.1]]
 [float]
 === Bug fixes
@@ -187,6 +211,16 @@ see {es-issue}65488[#65488].
 ** With nested `inner_hits`, the fast vector highlighter may load snippets from the wrong document. ({es-issue}65533[#65533])
 ** When _source is disabled, we can fail load nested `inner_hits` and `top_hits`. ({es-issue}66572[#66572])
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[breaking-7.10.0]]
 [float]
 === Breaking changes

diff --git a/docs/reference/release-notes/7.11.asciidoc b/docs/reference/release-notes/7.11.asciidoc
@@ -3,6 +3,20 @@
 
 Also see <<breaking-changes-7.11,Breaking changes in 7.11>>.
 
+[[known-issues-7.11.2]]
+[discrete]
+=== Known issues
+
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[enhancement-7.11.2]]
 [float]
 === Enhancements
@@ -59,6 +73,20 @@ Transform::
 
 Also see <<breaking-changes-7.11,Breaking changes in 7.11>>.
 
+[[known-issues-7.11.1]]
+[discrete]
+=== Known issues
+
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[enhancement-7.11.1]]
 [float]
 === Enhancements
@@ -162,6 +190,16 @@ Also see <<breaking-changes-7.11,Breaking changes in 7.11>>.
   sizes may increase much higher than required. Elasticsearch 7.13.0 contains a fix for this.
   For more details, see {es-issue}72509[#72509]
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [discrete]
 [[fips-140-2-compliance-7.11.0]]
 === FIPS 140-2 compliance

diff --git a/docs/reference/release-notes/7.12.asciidoc b/docs/reference/release-notes/7.12.asciidoc
@@ -3,6 +3,20 @@
 
 Also see <<breaking-changes-7.12,Breaking changes in 7.12>>.
 
+[[known-issues-7.12.1]]
+[discrete]
+=== Known issues
+
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[enhancement-7.12.1]]
 [float]
 === Enhancements
@@ -134,6 +148,16 @@ https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22137[CVE-2021-22137]
   sizes may increase much higher than required. Elasticsearch 7.13.0 contains a fix for this.
   For more details, see {es-issue}72509[#72509]
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[breaking-7.12.0]]
 [float]
 === Breaking changes

diff --git a/docs/reference/release-notes/7.13.asciidoc b/docs/reference/release-notes/7.13.asciidoc
@@ -13,6 +13,16 @@ maximum value of `512`. This allows autoscaling to run reliably as it relies on
 assigning jobs only via memory. Having `xpack.ml.max_open_jobs` as a small
 number may cause autoscaling to behave unexpectedly.
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[deprecation-7.13.0]]
 [float]
 === Deprecations

diff --git a/docs/reference/release-notes/7.9.asciidoc b/docs/reference/release-notes/7.9.asciidoc
@@ -16,6 +16,16 @@ with a `NOT IN` operator.
 We have fixed this issue in {es} 7.10.1 and later versions. For more details,
 see {es-issue}65488[#65488].
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[bug-7.9.3]]
 [float]
 === Bug fixes
@@ -94,6 +104,16 @@ with a `NOT IN` operator.
 We have fixed this issue in {es} 7.10.1 and later versions. For more details,
 see {es-issue}65488[#65488].
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[deprecation-7.9.2]]
 [float]
 === Deprecations
@@ -203,6 +223,16 @@ with a `NOT IN` operator.
 We have fixed this issue in {es} 7.10.1 and later versions. For more details,
 see {es-issue}65488[#65488].
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[feature-7.9.1]]
 [float]
 === New features
@@ -360,6 +390,16 @@ with a `NOT IN` operator.
 We have fixed this issue in {es} 7.10.1 and later versions. For more details,
 see {es-issue}65488[#65488].
 
+* Snapshot and restore: If an index is deleted while the cluster is
+concurrently taking more than one snapshot then there is a risk that one of the
+snapshots may never complete and also that some shard data may be lost from the
+repository, causing future restore operations to fail. To mitigate this
+problem, prevent concurrent snapshot operations by setting
+`snapshot.max_concurrent_operations: 1`.
++
+This issue is fixed in {es} versions 7.13.1 and later. For more details, see
+{es-issue}73456[#73456].
+
 [[breaking-7.9.0]]
 [discrete]
 === Breaking changes