Optimize the size and pointer bytes for pdata structs

.chloggen/alignfieldsproto.yaml

@@ -0,0 +1,25 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. receiver/otlp)
+component: pkg/pdata
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Optimize the size and pointer bytes for pdata structs
+
+# One or more tracking issues or pull requests related to the change
+issues: [14339]
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
+
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

Makefile

@@ -180,6 +180,7 @@ ocb:
 genpdata:
 	cd internal/cmd/pdatagen && $(GOCMD) run main.go -C $(SRC_ROOT)
 	$(MAKE) -C pdata fmt
+	cd pdata && $(GO_TOOL) betteralign --generated_files --apply ./... || true
 
 DOCKERCMD ?= docker
 DOCKER_PROTOBUF ?= otel/build-protobuf:0.23.0

internal/tools/go.mod

@@ -5,6 +5,7 @@ go 1.24.0
 tool (
 	github.com/a8m/envsubst/cmd/envsubst
 	github.com/client9/misspell/cmd/misspell
+	github.com/dkorunic/betteralign/cmd/betteralign
 	github.com/golangci/golangci-lint/v2/cmd/golangci-lint
 	github.com/google/addlicense
 	github.com/jcchavezs/porto/cmd/porto
@@ -39,6 +40,7 @@ require (
 	github.com/Antonboom/testifylint v1.6.4 // indirect
 	github.com/BurntSushi/toml v1.5.0 // indirect
 	github.com/Djarvur/go-err113 v0.1.1 // indirect
+	github.com/KimMachineGun/automemlimit v0.7.5 // indirect
 	github.com/Masterminds/semver/v3 v3.4.0 // indirect
 	github.com/Microsoft/go-winio v0.6.2 // indirect
 	github.com/MirrexOne/unqueryvet v1.2.1 // indirect
@@ -84,6 +86,7 @@ require (
 	github.com/dave/dst v0.27.3 // indirect
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/denis-tingaikin/go-header v0.5.0 // indirect
+	github.com/dkorunic/betteralign v0.8.2 // indirect
 	github.com/dlclark/regexp2 v1.11.5 // indirect
 	github.com/dnephin/pflag v1.0.7 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
@@ -129,6 +132,7 @@ require (
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/go-github/v76 v76.0.0 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
+	github.com/google/renameio/v2 v2.0.1 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/gordonklaus/ineffassign v0.2.0 // indirect
 	github.com/gostaticanalysis/analysisutil v0.7.1 // indirect
@@ -187,6 +191,7 @@ require (
 	github.com/nishanths/predeclared v0.2.2 // indirect
 	github.com/nunnatsa/ginkgolinter v0.21.2 // indirect
 	github.com/pavius/impi v0.0.3 // indirect
+	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/pjbgf/sha1cd v0.5.0 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
@@ -214,6 +219,7 @@ require (
 	github.com/sashamelentyev/usestdlibvars v1.29.0 // indirect
 	github.com/securego/gosec/v2 v2.22.10 // indirect
 	github.com/sergi/go-diff v1.4.0 // indirect
+	github.com/sirkon/dst v0.26.4 // indirect
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/sivchari/containedctx v1.0.3 // indirect
 	github.com/skeema/knownhosts v1.3.2 // indirect