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https://issues.apache.org/jira/browse/BEAM-14484?focusedWorklogId=772606&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-772606
]
ASF GitHub Bot logged work on BEAM-14484:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/May/22 21:11
Start Date: 19/May/22 21:11
Worklog Time Spent: 10m
Work Description: jrmccluskey commented on code in PR #17716:
URL: https://github.com/apache/beam/pull/17716#discussion_r877544245
##########
sdks/go/pkg/beam/core/runtime/exec/datasource.go:
##########
@@ -366,13 +389,30 @@ func (n *DataSource) Checkpoint() (SplitResult,
time.Duration, bool, error) {
ow := su.GetOutputWatermark()
- // Always split at fraction 0.0, should have no primaries left.
+ // Always split at fraction 0.0. All remaining work should be returned
as a residual, as anything left in the primaries
+ // will not be rescheduled and could represent data loss. We expect nil
primaries but will also ignore any restrictions
+ // that are bounded and of size 0 as they represent no remaining work.
ps, rs, err := su.Split(0.0)
if err != nil {
return SplitResult{}, -1 * time.Minute, false, err
}
+ if len(rs) == 0 {
+ return SplitResult{}, -1 * time.Minute, false, nil
+ }
if len(ps) != 0 {
- return SplitResult{}, -1 * time.Minute, false,
fmt.Errorf("failed to checkpoint: got %v primary roots, want none", ps)
+ // Expected structure of the root FullValue is KV<KV<Elm,
KV<BoundedRTracker, watermarkEstimatorState>>, Size, (Timestamp?, Windows?)>
Review Comment:
Fixed
Issue Time Tracking
-------------------
Worklog Id: (was: 772606)
Time Spent: 4h 40m (was: 4.5h)
> Improve error message surrounding primary returns in the self-checkpointing
> code
> --------------------------------------------------------------------------------
>
> Key: BEAM-14484
> URL: https://issues.apache.org/jira/browse/BEAM-14484
> Project: Beam
> Issue Type: Improvement
> Components: sdk-go
> Reporter: Jack McCluskey
> Assignee: Jack McCluskey
> Priority: P1
> Time Spent: 4h 40m
> Remaining Estimate: 0h
>
> The error message in the Go SDK harness around returned primaries in the
> self-checkpointing code
> ([https://github.com/apache/beam/blob/ea1f292e9cf31fc8c4803b10d811f0d3ee184ae7/sdks/go/pkg/beam/core/runtime/exec/datasource.go#L375)]
> is unclear and should be made more explicit. It should also guide the user
> towards making sure that the restriction behaves properly in the
> self-checkpointing case.
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