…cs (unary , streaming) in channel pool (#2696)

* feat(bigtable): introduce a channel trace for exporting bigtable channel specific metrics. Creates per_connection_error_count and outstanding_rpcs_per_connection tracers.

…anding rpcs to INTERNAL_VIEW (#2700)

* feat(bigtable): add internal grpc subconnections metric

* feat(bigtable): add internal grpc subconnections metric
k

* Fix

Change-Id: I1f0e24fb27c719d96839687418dde54d50fbc841

* feat(bigtable): populate alts field in channel entry

* WIP

* chore(main): release 2.68.1-SNAPSHOT

* chore: generate libraries at Wed Nov 12 19:16:46 UTC 2025

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: cloud-java-bot <cloud-java-bot@google.com>

🤖 I have created a release *beep* *boop*
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## [2.69.0](https://togithub.com/googleapis/java-bigtable/compare/v2.68.0...v2.69.0) (2025-11-17)


### Features

* **bigtable:** Add internal grpc subconnections metric and add outstanding rpcs to INTERNAL_VIEW ([#2700](https://togithub.com/googleapis/java-bigtable/issues/2700)) ([e3e6e99](https://togithub.com/googleapis/java-bigtable/commit/e3e6e993ee197f897c166fb8959755db0cb9c3fc))
* **bigtable:** Expose a metric to track the number of outstanding rpcs (unary , streaming) in channel pool ([#2696](https://togithub.com/googleapis/java-bigtable/issues/2696)) ([140a1ad](https://togithub.com/googleapis/java-bigtable/commit/140a1ad81947da26c1539632ff04748dc3498d69))
* **bigtable:** Populate alts field in channel entry ([#2702](https://togithub.com/googleapis/java-bigtable/issues/2702)) ([1bfb763](https://togithub.com/googleapis/java-bigtable/commit/1bfb763e6e4fb6fe8c808abe5dbd4221d3a632c3))
* Enable ALTS hard bound token in Bigtable w/ direct access ([#2695](https://togithub.com/googleapis/java-bigtable/issues/2695)) ([d12b37d](https://togithub.com/googleapis/java-bigtable/commit/d12b37dacf8712d30be05175828999af74159819))

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