[jvm] Spawn nailgun servers outside the pool lock #13796
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tdyas
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Dec 4, 2021
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illicitonion
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Dec 7, 2021
Internal changes: * [internal] Remove superfluous f-string specifiers ([#13821](#13821)) * [internal] scala: extract annotations as consumed types ([#13810](#13810)) * [jvm] Split nailgun digest from input file digests ([#13813](#13813)) * [internal] jvm: add jre_major_version and use stderr to properly extract version ([#13812](#13812)) * [internal] Clean up Go `embed` support's handling of dependencies ([#13801](#13801)) * [internal] scala: handle package object syntax in parser ([#13809](#13809)) * [internal] java: fix junit sentinel rule setup ([#13815](#13815)) * [internal] upgrade to rust v1.57.0 ([#13807](#13807)) * [internal] add failing test for FrozenDict equality issue ([#13389](#13389)) * [internal] Use `PyObject` instead of `Value` in more places ([#13802](#13802)) * Remove MultiPlatform Process abstractions ([#12725](#12725)) * [internal] add `JvmToolBase` for lockfile handling for JVM tools ([#13777](#13777)) * [internal] Port `MergeDigests` to Rust ([#13773](#13773)) * [jvm] Spawn nailgun servers outside the pool lock ([#13796](#13796)) * [internal] DRY loading internal Go binaries ([#13800](#13800)) * [internal] Convert unit tests to use pytest ([#13798](#13798)) * [internal] remove dead code - socket util. ([#13797](#13797)) * [internal] Reorganize Go parser scripts ([#13791](#13791)) * Adds Jackson core/datatype to `JVM_ARTIFACT_MAPPINGS` ([#13792](#13792)) * [internal] go: initial support for embedding resources ([#13743](#13743)) * [internal] Refer to `go.mod` path when downloading packages ([#13786](#13786)) * [internal] More robust Go dependency inference tests ([#13785](#13785)) * [internal] `tailor` doesn't add `go_package` for `testdata` folder ([#13783](#13783)) * [internal] Add Scala backend to dryrun for wheel builds. ([#13772](#13772)) * [internal] Unify JVM thirdparty resolves ([#13771](#13771)) * [internal] scala: infer dependencies from consumed symbols and intermediate scopes ([#13758](#13758)) * [internal] java: infer scala encoded symbols ([#13739](#13739)) * [internal] scala: parse and report package scopes ([#13738](#13738)) * [internal] go: configure included env vars for `GoSdkProcess` ([#13734](#13734)) * Fix some `./cargo audit` vulnerabilities. ([#13728](#13728)) * [internal] fix non-empty __init__.py ([#13730](#13730)) * Compute RepositoryPex directly from addresses. ([#13716](#13716)) * Upgrade to cargo-audit 0.16.0. ([#13729](#13729)) * Simplify `NativeHandler`. ([#13727](#13727)) * [internal] Switch to a maintained fork of the `fuse` crate for `brfs`. ([#13679](#13679)) * [internal] Add infrastructure to support deprecating field names ([#13666](#13666)) * [internal] Introduce OptionalPex/OptionalPexRequest. ([#13712](#13712)) * [internal] tailor adds go_package targets ([#13703](#13703)) * [internal] Remove unused testproject for pants-plugin ([#13704](#13704)) * [internal] Rename ambiguous `subpath` variable for Go code ([#13701](#13701)) * [internal] scala: generate the JVM names seen by Java code for Scala code ([#13696](#13696)) * Use RequirementsPexRequest in run_pex_binary.py. ([#13693](#13693)) * [internal] Refactor finding owning `go_mod` for first-party packages ([#13695](#13695)) * [internal] repl: add append_only_caches / run_in_workspace attributes to ReplRequest ([#13599](#13599)) * [internal] switch back to official `cargo-ensure-prefix` crate ([#13692](#13692)) * [internal] scala: extract type names from all Type.* AST nodes ([#13685](#13685)) * [internal] Convert unit tests to use pytest ([#13652](#13652)) * Unblock codegen support for java export analysis (#13645) ([#13675](#13675)) * [internal] upgrade to Rust 2021 Edition ([#13644](#13644)) * [internal] Don't store derived values on `go_first_party_package` targets ([#13676](#13676)) * Upgrade to py03 0.15.1. ([#13725](#13725)) * Add PyPDF2 to module mapping ([#13717](#13717)) * Upgrade console and indacatif. ([#13726](#13726))
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As described in #13788, when we spawn nailgun processes, we currently do so inside the pool's lock. This blocks other processes from being acquired or started until the new server has started.
To resolve this,
PoolEntrys now hold anOption<NailgunProcess>instead, which accounts for the fact that although they are eagerly started, the entry is potentially visible to other pool consumers before it has fully started.Fixes #13788.