[
https://issues.apache.org/jira/browse/BEAM-9650?focusedWorklogId=429599&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-429599
]
ASF GitHub Bot logged work on BEAM-9650:
----------------------------------------
Author: ASF GitHub Bot
Created on: 01/May/20 18:28
Start Date: 01/May/20 18:28
Worklog Time Spent: 10m
Work Description: Ardagan commented on a change in pull request #11477:
URL: https://github.com/apache/beam/pull/11477#discussion_r418673674
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/transforms/PeriodicSequence.java
##########
@@ -21,33 +21,69 @@
import static
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkNotNull;
import static
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.Preconditions.checkState;
-import java.util.List;
+import java.util.Objects;
import javax.annotation.Nullable;
import org.apache.beam.sdk.annotations.Experimental;
import org.apache.beam.sdk.io.range.OffsetRange;
+import org.apache.beam.sdk.schemas.JavaFieldSchema;
+import org.apache.beam.sdk.schemas.annotations.DefaultSchema;
import org.apache.beam.sdk.transforms.splittabledofn.RestrictionTracker;
-import org.apache.beam.sdk.transforms.splittabledofn.Sizes;
import org.apache.beam.sdk.transforms.splittabledofn.SplitResult;
import org.apache.beam.sdk.values.PCollection;
import
org.apache.beam.vendor.guava.v26_0_jre.com.google.common.base.MoreObjects;
import org.joda.time.Duration;
import org.joda.time.Instant;
/**
- * A {@link PTransform} which generates a sequence of timestamped elements at
given interval in
- * runtime.
+ * A {@link PTransform} which generates a sequence of timestamped elements at
given runtime
+ * interval.
*
- * <p>Receives a PCollection<List<Long>> where each element triggers the
generation of sequence and
- * has following elements: 0: first element timestamp 1: last element
timestamp 2: interval
+ * <p>Transform will not output elements prior to target time. Transform can
output elements at any
+ * time after target time.
*
- * <p>All elements that have timestamp in the past will be output right away.
Elements that have
- * timestamp in the future will be delayed.
- *
- * <p>Transform will not output elements prior to target timestamp. Transform
can output elements at
- * any time after target timestamp.
+ * <p>Multiple elements can be output at given moment if their timestamp is
earlier than current
+ * time.
*/
@Experimental(Experimental.Kind.SPLITTABLE_DO_FN)
-public class PeriodicSequence extends PTransform<PCollection<List<Long>>,
PCollection<Instant>> {
+public class PeriodicSequence
+ extends PTransform<PCollection<PeriodicSequence.SequenceDefinition>,
PCollection<Instant>> {
+
+ @DefaultSchema(JavaFieldSchema.class)
+ public static class SequenceDefinition {
+ public Instant first;
+ public Instant last;
+ public Long durationMilliSec;
+
+ public SequenceDefinition() {}
+
+ public SequenceDefinition(Instant first, Instant last, Duration duration) {
+ this.first = first;
+ this.last = last;
+ this.durationMilliSec = duration.getMillis();
+ }
+
+ @Override
+ public boolean equals(Object obj) {
+ if (this == obj) {
+ return true;
+ }
+
+ if (obj == null || obj.getClass() != this.getClass()) {
+ return false;
+ }
+
+ SequenceDefinition src = (SequenceDefinition) obj;
+ return src.first.equals(this.first)
+ && src.last.equals(this.last)
+ && src.durationMilliSec.equals(this.durationMilliSec);
+ }
+
+ @Override
+ public int hashCode() {
+ int result = Objects.hash(first, last, durationMilliSec);
+ return result;
+ }
Review comment:
I tried to use it, but didn't manage to get AutoValue work. It failed to
properly detect constructor for generated class. I tried to debug it, but it
would be better to handle in separate PR.
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Issue Time Tracking
-------------------
Worklog Id: (was: 429599)
Time Spent: 9h 20m (was: 9h 10m)
> Add consistent slowly changing side inputs support
> --------------------------------------------------
>
> Key: BEAM-9650
> URL: https://issues.apache.org/jira/browse/BEAM-9650
> Project: Beam
> Issue Type: Bug
> Components: io-ideas
> Reporter: Mikhail Gryzykhin
> Assignee: Mikhail Gryzykhin
> Priority: Major
> Time Spent: 9h 20m
> Remaining Estimate: 0h
>
> Add implementation for slowly changing dimentions based on [design
> doc](https://docs.google.com/document/d/1LDY_CtsOJ8Y_zNv1QtkP6AGFrtzkj1q5EW_gSChOIvg/edit]
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