laraschmidt commented on a change in pull request #15540:
URL: https://github.com/apache/beam/pull/15540#discussion_r719810671
##########
File path:
runners/core-java/src/main/java/org/apache/beam/runners/core/SimpleDoFnRunner.java
##########
@@ -1190,13 +1190,20 @@ public Timer withOutputTimestamp(Instant
outputTimestamp) {
* </ul>
*/
private void setAndVerifyOutputTimestamp() {
-
if (outputTimestamp != null) {
- checkArgument(
- !outputTimestamp.isBefore(elementInputTimestamp),
- "output timestamp %s should be after input message timestamp or
output timestamp of firing timers %s",
- outputTimestamp,
- elementInputTimestamp);
+ // The documentation of getAllowedTimestampSkew explicitly permits
Long.MAX_VALUE to be used
+ // for infinite skew. Defend against underflow in that case for
timestamps before the epoch.
+ if (fn.getAllowedTimestampSkew().getMillis() != Long.MAX_VALUE
Review comment:
Sounds good.
##########
File path:
runners/core-java/src/main/java/org/apache/beam/runners/core/SimpleDoFnRunner.java
##########
@@ -1190,13 +1190,20 @@ public Timer withOutputTimestamp(Instant
outputTimestamp) {
* </ul>
*/
private void setAndVerifyOutputTimestamp() {
-
if (outputTimestamp != null) {
- checkArgument(
- !outputTimestamp.isBefore(elementInputTimestamp),
- "output timestamp %s should be after input message timestamp or
output timestamp of firing timers %s",
- outputTimestamp,
- elementInputTimestamp);
+ // The documentation of getAllowedTimestampSkew explicitly permits
Long.MAX_VALUE to be used
+ // for infinite skew. Defend against underflow in that case for
timestamps before the epoch.
+ if (fn.getAllowedTimestampSkew().getMillis() != Long.MAX_VALUE
Review comment:
Sounds good. Done.
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