[
https://issues.apache.org/jira/browse/BEAM-12040?focusedWorklogId=578630&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-578630
]
ASF GitHub Bot logged work on BEAM-12040:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 07/Apr/21 20:06
Start Date: 07/Apr/21 20:06
Worklog Time Spent: 10m
Work Description: chamikaramj commented on a change in pull request
#14450:
URL: https://github.com/apache/beam/pull/14450#discussion_r609034130
##########
File path: sdks/java/core/src/main/java/org/apache/beam/sdk/io/WriteFiles.java
##########
@@ -349,15 +326,14 @@ public void validate(PipelineOptions options) {
getWindowedWrites(),
"Must use windowed writes when applying %s to an unbounded
PCollection",
WriteFiles.class.getSimpleName());
- // The reason for this is https://issues.apache.org/jira/browse/BEAM-1438
- // and similar behavior in other runners. Runners can choose to ignore
this check and perform
- // runner determined sharding for unbounded data by overriding the option
- // `withRunnerDeterminedShardingUnboundedInternal`.
- if (!getWithRunnerDeterminedShardingUnbounded()) {
+ // Sharding used to be required due to
https://issues.apache.org/jira/browse/BEAM-1438 and
+ // similar behavior in other runners. Some runners may support runner
determined sharding now.
+ // Check merging window here due to
https://issues.apache.org/jira/browse/BEAM-12040.
+ if (input.getWindowingStrategy().needsMerge()) {
Review comment:
@kennknowles is there a better way to do this without regressions and
without runner specific overrides ?
How about adding overrides to runners that do not support auto-sharding to
detect this condition and fail early ?
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Issue Time Tracking
-------------------
Worklog Id: (was: 578630)
Time Spent: 1.5h (was: 1h 20m)
> WriteFiles withRunnerDeterminedShardingUnbounded doesn't work with session
> windows
> ----------------------------------------------------------------------------------
>
> Key: BEAM-12040
> URL: https://issues.apache.org/jira/browse/BEAM-12040
> Project: Beam
> Issue Type: Improvement
> Components: io-java-files
> Reporter: Siyuan Chen
> Priority: P2
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Currently the implementation of `withRunnerDeterminedShardingUnbounded` uses
> a stateful DoFn to achieve the grouping and batching of the input elements,
> which doesn't support session windows. One possible way is to add another GBK
> prior to the stateful DoFn to first get session windows merged and reify the
> window before invoking the sateful DoFn.
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