v0.19.0 is the biggest and most exciting Parca release yet!

Highlights:

• A complete re-design of the UI. ✨
• All APIs are now served in Apache Arrow format. This completes the migration to being fully Apache Arrow based for ingestion and querying. 📈
• Queries can now filter by arbitrary profile labels (trace ID, customer ID, or whatever else is added to profiling data). 🔍
• Icicle graphs can now group by profile labels (such as thread ID or name). 📊

Aside from that, there are countless performance improvements and bug fixes.

Full Changelog:

• ui-perf: Protobuf long type handled as Bigint instead of string on the UI by @manojVivek in #2934
• ui: Redundant query request fix by @manojVivek in #3331
• fix(server): handle gRPC-Web requests over HTTP2 by @maxbrunet in #3352
• ui: Flamegraph crash fix by @manojVivek in #3362
• ui: Fixes the bug where flamegraph goes blank for some instrumented profiles by @manojVivek in #3363
• Allow filtering data by pprof labels by @brancz in #3365
• ui: Handling 0 as a divisor in BigInt divide util by @manojVivek in #3374
• ui/shared/profile/IcicleGraphArrow: Create arrow-based IcicleGraph by @metalmatze in #3326
• ui: Making a default query on initial page load by @manojVivek in #2609
• pkg/debuginfo: Improve debuginfod client by @brancz in #3413
• pkg/query: TestGenerateFlamegraphArrowWithInlined by @metalmatze in #3415
• ui: Passing MetricsGraph variables through Parca Context by @manojVivek in #3439
• parca: add --storage-snapshot-trigger-size by @asubiotto in #3432
• pkg/query: Support unsymbolized profiles with arrow fg by @metalmatze in #3433
• pkg/query: Correctly sum up total cumulative value by @metalmatze in #3440
• pkg/query/flamegraph_arrow: Cast strings to bytes by @metalmatze in #3441
• debuginfo: Add traces by @kakkoyun in #3396
• pkg/debuginfo: Allow user to force a debuginfo upload by @brancz in #3450
• ui: Metrics graph compare fix by @manojVivek in #3455
• Dependency inject the memory.Allocator for rendering by @thorfour in #3461
• ui: Arrow Flamegraph shows pprof labels by @metalmatze in #3460
• ui: value formatter crash fix by @manojVivek in #3467
• Add SortBy and GroupBy actions for Icicle Graphs by @metalmatze in #3479
• Symbolize without intermediate format directly in Apache Arrow format by @brancz in #3519
• pkg/config: Allow configuring to keep only certain sample types by @brancz in #3540
• Fix for panic when building from dictionaries by @thorfour in #3543
• Update badges by @kakkoyun in #3560
• ui: Callgraph undefined diff handled in tooltip by @manojVivek in #3559
• pkg/query: Replace remaining slices.Clone by @brancz in #3565
• pkg/query: Add fast map of strings to json marshaling by @brancz in #3564
• pkg/query: Fix cases where dicts are empty by @brancz in #3580
• ui: UI Build failure fix by @manojVivek in #3591
• flamegraph_arrow: Inject artifical label node by @metalmatze in #3516
• *: Allow uploading debuginfo sources by @brancz in #3590
• Refactor the flamegraphBuilder by @metalmatze in #3594
• pkg/query/flamegraph_arrow: Cast bytes to string when accessing maps keys by @metalmatze in #3597
• feat(snap): add config options to send profiles to a remote store by @jnsgruk in #3572
• ui/packages/profile: Disable automatic retries for merge queries by @metalmatze in #3514
• pkg/query/flamegraph_arrow: Expose diff values, dont set to null by @metalmatze in #3624
• *: Allow normalizing server side by @brancz in #3625
• ci: fix snap test - s/port/http-address/g by @jnsgruk in #3622
• pkg/debuginfo: Save sources upload without extension by @brancz in #3631
• index.tsx: fix typo by @javierhonduco in #3637
• pkg/query/flamegraph_arrow: Add tracing by @metalmatze in #3635
• pkg/query/flamegraph_arrow: Properly calculate height by @metalmatze in #3632
• pkg/query: Improve flamegraph performance through dictionary unification by @brancz in #3651
• ui: Reverting prettier-plugin-tailwindcss upgrade by @manojVivek in #3658
• add startline to function when symbolizing elf by @albertlockett in #3648
• Improve flamegraph rendering performance by @brancz in #3661
• ui: Sources Panel UI improvements by @manojVivek in #3657
• Add source report: View sources and show profiling data inline by @brancz in #3666
• Move table to using arrow by @metalmatze in #3659
• ui: Disabling sources view by default by @manojVivek in #3668
• ui: Read source UI improvements by @manojVivek in #3670
• Use checked allocator by @thorfour in #3673
• pkg/query: Fix how inlined functions are determined to be root by @brancz in #3684
• ui/packages/profile/Table: Check functionname for empty string by @metalmatze in #3687
• Implementing redesign by @monicawoj in #3548
• pkg/query: Small arrow flamegraph cleanups by @brancz in #3685
• ui: Fix to show the loader on top of the source pane by @manojVivek in #3686
• pkg/query: Reduce copy children cpu by @brancz in #3695
• ui: Fix unexpectedly unfocusing matchers input by @brancz in #3701
• fix profile view header bug and button spacing by @monicawoj in #3705
• go.mod: Update frostdb and arrow by @brancz in #3706
• pkg/query: Ignore staticcheck lint by @brancz in #3707
• ui: Minor UI fixes by @manojVivek in #3714
• ui: Source View - Scroll to line fix by @manojVivek in #3716
• ui: Parca minor style tweaks for Input and Select component by @manojVivek in #3717
• pkg/query: Reduce dependency on sample labels by @brancz in #3718
• pkg/query: Use hash of labels instead of marshaling labels to json by @brancz in #3719
• General styling and dark mode improvements by @monicawoj in #3720
• Fix double free by @thorfour in #3726
• ui: Reading string from Arrow ArrayBuffers by @manojVivek in #3727
• pkg/parca: Add --http-read-timeout and --http-write-timeout options by @quite4work in #3689
• Fix Clear Selection button in table by @monicawoj in #3728
• fix memory leak by @thorfour in #3733
• pkg/query/flamegraph_arrow: Trim using breadth-first-search #3722 by @thorfour in #3730
• ui: Minor UI fixes by @manojVivek in #3735
• ui: Flamegraph - passing width from the parent instead of detecting from within by @manojVivek in #3736
• ui/shared/profile: Pass down arrow response object by @metalmatze in #3738
• pkg/query: Use maps instead of slices for children for O(1) access by @brancz in #3743
• fix(ui): remove unused tableFromIPC import by @maxbrunet in #3746
• ci: yarn cache config tweaks by @manojVivek in #3739
• pkg/query/flamegraph_arrow: Return empty record if no samples by @metalmatze in #3740
• pkg/query/flamegraph_arrow: Remove locationFolded column by @metalmatze in #3752
• Disable Parca scraping by default by @metalmatze in #3737
• pkg/query: Fix test by @brancz in #3753
• *: Remove unnecessary arrow structs by @brancz in #3754
• ui: Arrow string fix by @manojVivek in #3761
• pkg/query: Select children map before iterating over stack by @brancz in #3763
• pkg/query/flamegraph_arrow: Add testing flamegraphComparer by @metalmatze in #3755
• ui: Make arrow flamegraph the default by @metalmatze in #3764
• pkg/query: Don't use GetValueIndex, use raw underlying array by @brancz in #3765
• pkg/query: Use optimal index uint type for dictionaries by @metalmatze in #3772
• pkg/query: Create bytes percent column to recordStats by @metalmatze in #3773
• Various small arrow flamegraph perf improvements by @brancz in #3771
• pkg/query/flamegraph_arrow: Remove mapping start,limit,offset by @metalmatze in #3774
• Choose optimal integer types based to minimize size by @brancz in #3775
• fix(cache): ensure LoadingOnceCache can only load once by @maxbrunet in #3768
• pkg/server: Remove cmdline endpoint by @brancz in #3423
• pkg/metastore: Guard against function being nil by @metalmatze in #3778
• pkg/query: Remove unused mapping columns from arrow table by @metalmatze in #3779
• ui/profile/icicle: Always group by function name by @metalmatze in #3781
• ui: Docked Graph MetaInfo Panel by @manojVivek in #3683
• Icicle graph legend by @monicawoj in #3787
• Modify wording of error messages by @yomete in #3806
• pkg/query: Set different metadata on aggregated row to null by @metalmatze in #3805
• ui/profile/CompareButton: Use variant neutral by @metalmatze in #3785
• use latest tip of arrow by @thorfour in #3811
• Fix sharing profile bug by @yomete in #3818
• pkg/query: Build pprof directly from arrow records by @brancz in #3826
• proto: Add latest report types to sharing by @brancz in #3831
• ui: Source View fixes by @manojVivek in #3836
• Add gRPC endpoint for Agent telemetry data by @javierhonduco in #3837
• updating table header position:https://github.com/parca-dev/parca/iss… by @karthick3018 in #3838
• pkg/query: Fix potential nil pointer by @brancz in #3844
• pkg/parcacol: Don't allocate during string to byte conversion by @brancz in #3845
• pkg/query: Use mapping file validity bitmap to add mapping file by @brancz in #3846
• pkg/query: Transfer empty values from empty dictionaries correctly by @brancz in #3849
• pkg/query: Improve filter performance by @brancz in #3850

New Contributors

• @albertlockett made their first contribution in #3648
• @quite4work made their first contribution in #3689
• @karthick3018 made their first contribution in #3838

Full Changelog: v0.18.0...v0.19.0