[
https://issues.apache.org/jira/browse/BEAM-7980?focusedWorklogId=299574&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-299574
]
ASF GitHub Bot logged work on BEAM-7980:
----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Aug/19 16:59
Start Date: 22/Aug/19 16:59
Worklog Time Spent: 10m
Work Description: aaltay commented on pull request #9398: [BEAM-7980]
Exactly once artifact retrieval for Python SDK worker pool
URL: https://github.com/apache/beam/pull/9398#discussion_r316782950
##########
File path: sdks/python/container/boot.go
##########
@@ -105,18 +107,57 @@ func main() {
// (2) Retrieve and install the staged packages.
- dir := filepath.Join(*semiPersistDir, "staged")
+ func() {
- files, err := artifact.Materialize(ctx, *artifactEndpoint,
info.GetRetrievalToken(), dir)
- if err != nil {
- log.Fatalf("Failed to retrieve staged files: %v", err)
- }
+ installCompleteFile := filepath.Join(os.TempDir(),
"beam.install.complete")
- // TODO(herohde): the packages to install should be specified
explicitly. It
- // would also be possible to install the SDK in the Dockerfile.
- if setupErr := installSetupPackages(files, dir); setupErr != nil {
- log.Fatalf("Failed to install required packages: %v", setupErr)
- }
+ // skip if install already complete
+ _, err = os.Stat(installCompleteFile)
+ if err == nil {
+ return
+ }
+
+ // lock to guard from concurrent artifact retrieval and
installation,
+ // when called by child processes in a worker pool
+ lock, err := lockfile.New(filepath.Join(os.TempDir(),
"beam.install.lck"))
Review comment:
Should we separate `filepath.Join(os.TempDir(), "beam.install.lck")` to a
variable similar to `installCompleteFile`? Not sure what is the go convention
if it is being used only in one place.
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
Issue Time Tracking
-------------------
Worklog Id: (was: 299574)
Time Spent: 6h (was: 5h 50m)
> External environment with containerized worker pool
> ---------------------------------------------------
>
> Key: BEAM-7980
> URL: https://issues.apache.org/jira/browse/BEAM-7980
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-harness
> Reporter: Thomas Weise
> Assignee: Thomas Weise
> Priority: Major
> Time Spent: 6h
> Remaining Estimate: 0h
>
> Augment Beam Python docker image and boot.go so that it can be used to launch
> BeamFnExternalWorkerPoolServicer.
> [https://docs.google.com/document/d/1z3LNrRtr8kkiFHonZ5JJM_L4NWNBBNcqRc_yAf6G0VI/edit#heading=h.lnhm75dhvhi0]
>
--
This message was sent by Atlassian Jira
(v8.3.2#803003)
