priority: implement changes to child policy caching specified in A115 by easwars · Pull Request #8997 · grpc/grpc-go

easwars · 2026-03-20T21:35:41Z

Summary of changes:

Add a new API to the balancergroup that allows removal of child policies with immediate effect, even when a cache is configured.
Make the priority LB use this new API when removing child policies that have been removed from its configuration.
- This change is protected with an environment variable that turns on the new behavior by default.
Update the name generation algorithm to give higher preference to reuse names of existing priority (if there is a locality match) over lower priorities.
Fix a bunch of tests in the priority LB policy to ensure that they work with the old and new behavior.
Fix a couple of aggregate cluster tests such that they don't continuously handle the same NACKed resource from the management server.
Other minor cleanups in tests that I had to look at as part of making this change.

RELEASE NOTES:

xds/priority: Stop caching child LB policies removed from the configuration. This will help reduce memory and cpu usage when localities are constantly switching between priorities.

codecov · 2026-03-23T04:18:22Z

Codecov Report

❌ Patch coverage is 96.42857% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.01%. Comparing base (12e91dd) to head (c1bcadd).
⚠️ Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
internal/balancergroup/balancergroup.go	90.90%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8997      +/-   ##
==========================================
- Coverage   83.04%   83.01%   -0.04%     
==========================================
  Files         411      411              
  Lines       32892    32917      +25     
==========================================
+ Hits        27316    27326      +10     
- Misses       4181     4193      +12     
- Partials     1395     1398       +3

Files with missing lines	Coverage Δ
internal/envconfig/envconfig.go	`100.00% <ø> (ø)`
...ds/balancer/cdsbalancer/configbuilder_childname.go	`100.00% <100.00%> (ø)`
internal/xds/balancer/priority/balancer.go	`84.48% <100.00%> (ø)`
internal/xds/balancer/priority/balancer_child.go	`91.78% <100.00%> (+0.35%)`	⬆️
...nternal/xds/balancer/priority/balancer_priority.go	`73.33% <100.00%> (ø)`
internal/balancergroup/balancergroup.go	`84.65% <90.90%> (-1.83%)`	⬇️

... and 26 files with indirect coverage changes

🚀 New features to boost your workflow:

❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

dfawley · 2026-03-23T21:43:45Z

Add a new API to the balancergroup that allows removal of child policies with immediate effect, even when a cache is configured.

Why not just clear Options.SubBalancerCloseTimeout?

dfawley · 2026-03-23T21:48:15Z

Why not just clear Options.SubBalancerCloseTimeout?

Oh, it's because we still want to cache lower priority children for awhile?

easwars · 2026-03-23T22:17:43Z

Why not just clear Options.SubBalancerCloseTimeout?

Oh, it's because we still want to cache lower priority children for awhile?

Yes. That is what we decided. The original gRFC had two cases where we would cache the child. We are only eliminating one of them as part of A115.

…grpc#8997) Summary of changes: - Add a new API to the `balancergroup` that allows removal of child policies with immediate effect, even when a cache is configured. - Make the `priority` LB use this new API when removing child policies that have been removed from its configuration. - This change is protected with an environment variable that turns on the new behavior by default. - Update the name generation algorithm to give higher preference to reuse names of existing priority (if there is a locality match) over lower priorities. - Fix a bunch of tests in the `priority` LB policy to ensure that they work with the *old* and *new* behavior. - Fix a couple of aggregate cluster tests such that they don't continuously handle the same NACKed resource from the management server. - Other minor cleanups in tests that I had to look at as part of making this change. RELEASE NOTES: * xds/priority: Stop caching child LB policies removed from the configuration. This will help reduce memory and cpu usage when localities are constantly switching between priorities.

Original PR: #8997 RELEASE NOTES: * xds/priority: Stop caching child LB policies removed from the configuration. This will help reduce memory and cpu usage when localities are constantly switching between priorities.

…grpc#8997) Summary of changes: - Add a new API to the `balancergroup` that allows removal of child policies with immediate effect, even when a cache is configured. - Make the `priority` LB use this new API when removing child policies that have been removed from its configuration. - This change is protected with an environment variable that turns on the new behavior by default. - Update the name generation algorithm to give higher preference to reuse names of existing priority (if there is a locality match) over lower priorities. - Fix a bunch of tests in the `priority` LB policy to ensure that they work with the *old* and *new* behavior. - Fix a couple of aggregate cluster tests such that they don't continuously handle the same NACKed resource from the management server. - Other minor cleanups in tests that I had to look at as part of making this change. RELEASE NOTES: * xds/priority: Stop caching child LB policies removed from the configuration. This will help reduce memory and cpu usage when localities are constantly switching between priorities.

…/forgejo) (#13580) This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [google.golang.org/grpc](https://github.com/grpc/grpc-go) | `v1.79.3` → `v1.82.1` | ![age](https://developer.mend.io/api/mc/badges/age/go/google.golang.org%2fgrpc/v1.82.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/go/google.golang.org%2fgrpc/v1.79.3/v1.82.1?slim=true) | --- ### gRPC-Go: xDS RBAC and HTTP/2 Vulnerabilities [GHSA-hrxh-6v49-42gf](GHSA-hrxh-6v49-42gf) <details> <summary>More information</summary> #### Details Multiple security vulnerabilities have been identified and addressed in grpc-go affecting the xDS RBAC authorization engine (internal/xds/rbac) and the HTTP/2 transport server implementation (internal/transport). These vulnerabilities could result in: - Authorization Bypass (Fail-Open) when translating xDS RBAC policies containing `Metadata` or `RequestedServerName` fields. - Denial of Service (High CPU Consumption) due to an HTTP/2 Rapid Reset mitigation bypass during client-initiated stream resets. - Denial of Service (Server Panic) when parsing crafted xDS RBAC policies containing `NOT` rules around unsupported fields. ##### Impact _What kind of vulnerability is it? Who is impacted?_ ##### xDS RBAC Authorization Bypass via `Metadata` & `RequestedServerName` matchers - Affected Component: xDS RBAC - Impact: When building policy matchers for gRPC RBAC from xDS configurations, unsupported `permission` and `principal` rules (specifically `Metadata` and `RequestedServerName`) were silently ignored and treated as no-ops. - If an authorization policy relied purely on these matchers for access control, treating those rules as no-ops effectively removed the restrictions. - If these unsupported rules were nested inside logical `NOT` rules (`Permission_NotRule` / `Principal_NotId`) or multi-condition `OR/AND` rules, silently dropping them changed the boolean logic flow of the authorization engine. As a result, policy evaluation decisions could fail open, allowing unauthorized clients to access protected gRPC services or resources. ##### HTTP/2 Rapid Reset Mitigation Bypass / Denial of Service via Stream Aborts - Affected Component: HTTP/2 transport - Impact: Earlier mitigations in grpc-go for HTTP/2 Rapid Reset only applied threshold checks to items that directly resulted in control frames being written back to the wire, such as `SETTINGS` ACKs or server-initiated `RST_STREAM`s. When a client initiated a rapid flood of stream creation (`HEADERS`) immediately followed by stream termination `RST_STREAM`, items queued up in the control buffer without counting against the transport response frame threshold. An attacker can repeatedly trigger this flood sequence to bypass reader blocking, resulting in high CPU usage, and Denial of Service (DoS). ##### Denial of Service (Panic) in xDS RBAC Engine via Unsupported Fields inside NOT Rules - Affected Component: xDS RBAC - Impact: The xDS RBAC policy translators recursively generate matchers for nested rules. When a `NOT` rule wrapped an unsupported or unhandled field (such as `SourcedMetadata`), the recursive step returned an empty matcher. This could result in a runtime panic when the RBAC engine attempts to authorize an incoming request. An attacker or misconfigured/malicious xDS management server delivering an LDS/RDS update containing a `NOT` rule around an unhandled field causes the gRPC server process to crash immediately (CWE-248 / Denial of Service). ##### Patches _Has the problem been patched? What versions should users upgrade to?_ All three issues have been fixed in `master` and will be released in 1.82.1 shortly. ##### Workarounds _Is there a way for users to fix or remediate the vulnerability without upgrading?_ If upgrading grpc-go immediately is not possible, apply the following workarounds based on your deployment architecture: * For xDS RBAC Vulnerabilities & Panics: Ensure that upstream xDS management servers do not push RBAC policies containing `Metadata`, `RequestedServerName`, or `NOT` rules wrapping unsupported fields (such as `SourcedMetadata`) to grpc-go servers. * For HTTP/2 Rapid Reset DOS: Configure upstream reverse proxies or load balancers (such as Envoy) with strict HTTP/2 `max_concurrent_streams` limits and active rate limiting on `RST_STREAM` frequency per connection. ##### Severity | Vulnerability | Qualitative Severity | Approximate CVSS v3.1 Score | Primary Impact | | :--- | :--- | :--- | :--- | | **xDS RBAC Authorization Bypass** | **High** | `8.2` | Unauthorized Access / Fail-Open | | **HTTP/2 Rapid Reset DOS Bypass** | **High** | `7.5` | High CPU Consumption / Denial of Service | | **xDS RBAC Engine Server Panic** | **Medium** | `5.9` | Process Crash / Denial of Service | #### Severity - CVSS Score: 8.8 / 10 (High) - Vector String: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N` #### References - [https://github.com/grpc/grpc-go/security/advisories/GHSA-hrxh-6v49-42gf](https://github.com/grpc/grpc-go/security/advisories/GHSA-hrxh-6v49-42gf) - [https://github.com/grpc/grpc-go/pull/9236](https://github.com/grpc/grpc-go/pull/9236) - [https://github.com/grpc/grpc-go/commit/4ea465d4ab98013f72a142fe0fc89c19770b2935](https://github.com/grpc/grpc-go/commit/4ea465d4ab98013f72a142fe0fc89c19770b2935) - [https://github.com/grpc/grpc-go](https://github.com/grpc/grpc-go) - [https://github.com/grpc/grpc-go/releases/tag/v1.82.1](https://github.com/grpc/grpc-go/releases/tag/v1.82.1) This data is provided by [OSV](https://osv.dev/vulnerability/GHSA-hrxh-6v49-42gf) and the [GitHub Advisory Database](https://github.com/github/advisory-database) ([CC-BY 4.0](https://github.com/github/advisory-database/blob/main/LICENSE.md)). </details> --- ### Release Notes <details> <summary>grpc/grpc-go (google.golang.org/grpc)</summary> ### [`v1.82.1`](https://github.com/grpc/grpc-go/releases/tag/v1.82.1): Release 1.82.1 [Compare Source](grpc/grpc-go@v1.82.0...v1.82.1) ### Security - server: Stop reading from the connection when flooded by HTTP/2 frames. The default value for this limit is 100 frames, excluding DATA and HEADERS, and may be changed by setting environment variable `GRPC_GO_EXPERIMENTAL_CONTROL_BUFFER_THROTTLE_LIMIT`. - xds/rbac: Support `Metadata` and `RequestedServerName` permissions matcher fields. If present in a DENY rule, previously these would be ignored and fail-open. - xds/rbac: Fix panic when parsing unsupported fields in `NotRule`/`NotId` permissions. - xds/rbac: Support the deprecated `source_ip` principal identifier by treating it as equivalent to `direct_remote_ip`. ### [`v1.82.0`](https://github.com/grpc/grpc-go/releases/tag/v1.82.0): Release 1.82.0 [Compare Source](grpc/grpc-go@v1.81.1...v1.82.0) ### Behavior Changes - server: Remove support for `GRPC_GO_EXPERIMENTAL_DISABLE_STRICT_PATH_CHECKING` environment varibale. Strict incoming RPC path validation (which has been the default since `v1.79.3`) can no longer be disabled. ([#9112](grpc/grpc-go#9112)) - transport: Add environment variable to change the default max header list size from `16MB` to `8KB`. This may be enabled by setting `GRPC_GO_EXPERIMENTAL_ENABLE_8KB_DEFAULT_HEADER_LIST_SIZE=true`. This will be enabled by default in a subsequent release. ([#9019](grpc/grpc-go#9019)) - balancer: Load Balancing policy registry is now case-sensitive. Set `GRPC_GO_EXPERIMENTAL_CASE_SENSITIVE_BALANCER_REGISTRIES=false` (and file an issue) to revert to case-insensitive behavior. ([#9017](grpc/grpc-go#9017)) ### New Features - experimental/stats: Expose a new API, `NewContextWithLabelCallback`, to register a callback that is invoked when telemetry labels are added. ([#8877](grpc/grpc-go#8877)) - Special Thanks: [@seth-epps](https://github.com/seth-epps) - client: Return a portion of the response body in the error message, when the client receives an unexpected non-gRPC HTTP response, to make debugging easier. ([#8929](grpc/grpc-go#8929)) - Special Thanks: [@chengxilo](https://github.com/chengxilo) - server: Add environment variable `GRPC_GO_SERVER_GOROUTINE_LABELS` that controls setting `runtime/pprof.Labels` on goroutines spawned by the server. Set `GRPC_GO_SERVER_GOROUTINE_LABELS=grpc.method=true` to add the `grpc.method` label on goroutines spawned to handle incoming requests. ([#9082](grpc/grpc-go#9082)) - Special Thanks: [@dfinkel](https://github.com/dfinkel) ### Bug Fixes - xds/server: Fix a memory leak of HTTP filter instances occurring when route configurations are updated in-place during a Route Discovery Service (RDS) update. ([#9138](grpc/grpc-go#9138)) - grpc: In the deprecated `gzip` Compressor (used via the deprecated `WithCompressor` dial option), enforce the `MaxRecvMsgSize` limit on the decompressed message buffer, preventing excessive memory allocation from highly compressed payloads. ([#9114](grpc/grpc-go#9114)) - Special Thanks: [@evilgensec](https://github.com/evilgensec) - stats/opentelemetry: Record retry attempts, `grpc.previous-rpc-attempts`, at the call level and not the attempt level. ([#8923](grpc/grpc-go#8923)) - encoding: Ensure `Close()` is always called on readers returned from `Compressor.Decompress` if possible. ([#9135](grpc/grpc-go#9135)) - channelz: Fix the `LastMessageSentTimestamp` and `LastMessageReceivedTimestamp` fields in `SocketMetrics` to ensure they contain correct timestamp values. ([#9109](grpc/grpc-go#9109)) ### [`v1.81.1`](https://github.com/grpc/grpc-go/releases/tag/v1.81.1): Release 1.81.1 [Compare Source](grpc/grpc-go@v1.81.0...v1.81.1) ### Security - xds/rbac: Fix a potential authorization bypass caused by incorrectly falling through URI/DNS SANs to Subject Distinguished Name (DN) when matching the authenticated principal name. With this fix, only the first non-empty identity source will be used, as per [gRFC A41](https://github.com/grpc/proposal/blob/master/A41-xds-rbac.md). ([#9111](grpc/grpc-go#9111)) - Special Thanks: [@al4an444](https://github.com/al4an444) ### Bug Fixes - otel: Segregate client and server RPC information used for metrics and traces, to avoid one overwriting the other. ([#9081](grpc/grpc-go#9081)) ### [`v1.81.0`](https://github.com/grpc/grpc-go/releases/tag/v1.81.0): Release 1.81.0 [Compare Source](grpc/grpc-go@v1.80.0...v1.81.0) ### Behavior Changes - balancer/rls: Switch gauge metrics to asynchronous emission (once per collection cycle) to reduce telemetry noise and align with other gRPC language implementations. ([#8808](grpc/grpc-go#8808)) ### Dependencies - Minimum supported Go version is now 1.25. ([#8969](grpc/grpc-go#8969)) ### Bug Fixes - xds: Use the leaf cluster's security config for the TLS handshake instead of the aggregate cluster's config. ([#8956](grpc/grpc-go#8956)) - transport: Send a `RST_STREAM` when receiving an `END_STREAM` when the stream is not already half-closed. ([#8832](grpc/grpc-go#8832)) - xds: Fix ADS resource name validation to prevent a panic. ([#8970](grpc/grpc-go#8970)) ### New Features - grpc/stats: Add support for custom labels in per-call metrics ([gRFC A108](https://github.com/grpc/proposal/blob/master/A108-otel-custom-per-call-label.md)). ([#9008](grpc/grpc-go#9008)) - xds: Add support for Server Name Indication (SNI) and SAN validation ([gRFC A101](https://github.com/grpc/proposal/blob/master/A101-SNI-setting-and-SNI-SAN-validation.md)). Disabled by default. To enable, set `GRPC_EXPERIMENTAL_XDS_SNI=true` environment variable. ([#9016](grpc/grpc-go#9016)) - xds: Add support to control which fields get propagated from ORCA backend metric reports to LRS load reports ([gRFC A85](https://github.com/grpc/proposal/blob/master/A85-lrs-custom-metrics-changes.md)). Disabled by default. To enable, set `GRPC_EXPERIMENTAL_XDS_ORCA_LRS_PROPAGATION=true`. ([#9005](grpc/grpc-go#9005)) - xds: Add metrics to track xDS client connectivity and cached resource state ([gRFC A78](https://github.com/grpc/proposal/blob/master/A78-grpc-metrics-wrr-pf-xds.md)). ([#8807](grpc/grpc-go#8807)) - stats/otel: Enhance `grpc.subchannel.disconnections` metric by adding disconnection reason to the `grpc.disconnect_error` label ([gRFC A94](https://github.com/grpc/proposal/blob/master/A94-subchannel-otel-metrics.md)). This provides granular insights into why subchannels are closing. ([#8973](grpc/grpc-go#8973)) - mem: Add `mem.Buffer.Slice()` API to slice the buffer like a slice. ([#8977](grpc/grpc-go#8977)) - Special Thanks: [@ash2k](https://github.com/ash2k) ### Performance Improvements - alts: Pool read buffers to lower memory utilization when sockets are unreadable. ([#8964](grpc/grpc-go#8964)) - transport: Pool HTTP/2 framer read buffers to reduce idle memory consumption. Currently limited to Linux for ALTS and non-encrypted transports (TCP, Unix). To disable, set `GRPC_GO_EXPERIMENTAL_HTTP_FRAMER_READ_BUFFER_POOLING=false` and report any issues. ([#9032](grpc/grpc-go#9032)) ### [`v1.80.0`](https://github.com/grpc/grpc-go/releases/tag/v1.80.0): Release 1.80.0 [Compare Source](grpc/grpc-go@v1.79.3...v1.80.0) ### Behavior Changes - balancer: log a warning if a balancer is registered with uppercase letters, as balancer names should be lowercase. In a future release, balancer names will be treated as case-insensitive; see [#5288](grpc/grpc-go#5288) for details. ([#8837](grpc/grpc-go#8837)) - xds: update resource error handling and re-resolution logic ([#8907](grpc/grpc-go#8907)) - Re-resolve all `LOGICAL_DNS` clusters simultaneously when re-resolution is requested. - Fail all in-flight RPCs immediately upon receipt of listener or route resource errors, instead of allowing them to complete. ### Bug Fixes - xds: support the LB policy configured in `LOGICAL_DNS` cluster resources instead of defaulting to `pick_first`. ([#8733](grpc/grpc-go#8733)) - credentials/tls: perform per-RPC authority validation against the leaf certificate instead of the entire peer certificate chain. ([#8831](grpc/grpc-go#8831)) - xds: enabling A76 ring hash endpoint keys no longer causes EDS resources with invalid proxy metadata to be NACKed when HTTP CONNECT (gRFC A86) is disabled. ([#8875](grpc/grpc-go#8875)) - xds: validate that the sum of endpoint weights in a locality does not exceed the maximum `uint32` value. ([#8899](grpc/grpc-go#8899)) - Special Thanks: [@RAVEYUS](https://github.com/RAVEYUS) - xds: fix incorrect proto field access in the weighted round robin (WRR) configuration where `blackout_period` was used instead of `weight_expiration_period`. ([#8915](grpc/grpc-go#8915)) - Special Thanks: [@gregbarasch](https://github.com/gregbarasch) - xds/rbac: handle addresses with ports in IP matchers. ([#8990](grpc/grpc-go#8990)) ### New Features - ringhash: enable gRFC A76 (endpoint hash keys and request hash headers) by default. ([#8922](grpc/grpc-go#8922)) ### Performance Improvements - credentials/alts: pool write buffers to reduce memory allocations and usage. ([#8919](grpc/grpc-go#8919)) - grpc: enable the use of pooled write buffers for buffering HTTP/2 frame writes by default. This reduces memory usage when connections are idle. Use the [WithSharedWriteBuffer](https://pkg.go.dev/google.golang.org/grpc#WithSharedWriteBuffer) dial option or the [SharedWriteBuffer](https://pkg.go.dev/google.golang.org/grpc#SharedWriteBuffer) server option to disable this feature. ([#8957](grpc/grpc-go#8957)) - xds/priority: stop caching child LB policies removed from the configuration. This will help reduce memory and cpu usage when localities are constantly switching between priorities. ([#8997](grpc/grpc-go#8997)) - mem: add a faster tiered buffer pool; use the experimental [mem.NewBinaryTieredBufferPool](https://pkg.go.dev/google.golang.org/grpc/mem@master#NewBinaryTieredBufferPool) function to create such pools. ([#8775](grpc/grpc-go#8775)) </details> --- ### Configuration 📅 **Schedule**: (UTC) - Branch creation - At any time (no schedule defined) - Automerge - Between 12:00 AM and 03:59 AM (`* 0-3 * * *`) 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] If you want to rebase/retry this PR, check this box --- This PR has been generated by [Mend Renovate](https://github.com/renovatebot/renovate).  Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/13580 Reviewed-by: Mathieu Fenniak <mfenniak@noreply.codeberg.org>

priority: implement changes to child policy caching specified in A115

0c5ef20

easwars force-pushed the disable_priority_lb_cache branch from 178649d to 0c5ef20 Compare March 23, 2026 04:15

easwars added 2 commits March 23, 2026 20:32

update the name generation algorithm to prefer same priority match

742a546

make vet happy

c1bcadd

easwars requested a review from dfawley March 23, 2026 20:48

easwars assigned dfawley Mar 23, 2026

easwars added Type: Behavior Change Behavior changes not categorized as bugs Area: xDS Includes everything xDS related, including LB policies used with xDS. labels Mar 23, 2026

easwars added this to the 1.80 Release milestone Mar 23, 2026

easwars marked this pull request as ready for review March 23, 2026 20:49

easwars mentioned this pull request Mar 23, 2026

A115: disable priority LB child policy retention cache grpc/proposal#541

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dfawley approved these changes Mar 23, 2026

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dfawley assigned easwars and unassigned dfawley Mar 23, 2026

easwars merged commit ccc8d7b into grpc:master Mar 23, 2026
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easwars mentioned this pull request Mar 24, 2026

cdsbalancer: fix name generator stability for empty locality priorities #9000

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jameshartig mentioned this pull request Mar 26, 2026

Constant connection churn stemming from GCS Direct Connectivity #8888

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arjan-bal mentioned this pull request Mar 31, 2026

Cherry-pick #8997 to v1.80.x #9027

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danielduhh mentioned this pull request Jun 10, 2026

storage: gRPC / direct connectivity results in insanely high memory usage googleapis/google-cloud-go#14538

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priority: implement changes to child policy caching specified in A115 - #8997

priority: implement changes to child policy caching specified in A115#8997
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