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Posted to github@beam.apache.org by GitBox <gi...@apache.org> on 2021/11/12 18:41:28 UTC
[GitHub] [beam] mosche opened a new pull request #15964: [BEAM-13209] Fix DynamoDBIO.write to properly handle partial success (SDK v2)
mosche opened a new pull request #15964:
URL: https://github.com/apache/beam/pull/15964
Fix DynamoDBIO.write to properly handle partial success with unprocessed items remaining (SDK v2).
I'll follow up with a similar PR for SDK v1.
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[GitHub] [beam] aromanenko-dev merged pull request #15964: [BEAM-13209] Fix DynamoDBIO.write to properly handle partial success (SDK v2)
Posted by GitBox <gi...@apache.org>.
aromanenko-dev merged pull request #15964:
URL: https://github.com/apache/beam/pull/15964
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[GitHub] [beam] mosche commented on pull request #15964: [BEAM-13209] Fix DynamoDBIO.write to properly handle partial success (SDK v2)
Posted by GitBox <gi...@apache.org>.
mosche commented on pull request #15964:
URL: https://github.com/apache/beam/pull/15964#issuecomment-969040536
R: @iemejia
R: @aromanenko-dev
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[GitHub] [beam] mosche commented on a change in pull request #15964: [BEAM-13209] Fix DynamoDBIO.write to properly handle partial success (SDK v2)
Posted by GitBox <gi...@apache.org>.
mosche commented on a change in pull request #15964:
URL: https://github.com/apache/beam/pull/15964#discussion_r769381925
##########
File path: sdks/java/io/amazon-web-services2/src/main/java/org/apache/beam/sdk/io/aws2/dynamodb/DynamoDBIO.java
##########
@@ -542,54 +562,64 @@ private void flushBatch() throws IOException, InterruptedException {
if (batch.isEmpty()) {
return;
}
-
try {
- // Since each element is a KV<tableName, writeRequest> in the batch, we need to group them
- // by tableName
- Map<String, List<WriteRequest>> mapTableRequest =
+ // Group values KV<tableName, writeRequest> by tableName
+ // Note: The original order of arrival is lost reading the map entries.
+ Map<String, List<WriteRequest>> writesPerTable =
batch.values().stream()
- .collect(
- Collectors.groupingBy(
- KV::getKey, Collectors.mapping(KV::getValue, Collectors.toList())));
-
- BatchWriteItemRequest batchRequest =
- BatchWriteItemRequest.builder().requestItems(mapTableRequest).build();
-
- Sleeper sleeper = Sleeper.DEFAULT;
- BackOff backoff = retryBackoff.backoff();
- int attempt = 0;
- while (true) {
- attempt++;
- try {
- client.batchWriteItem(batchRequest);
- break;
- } catch (Exception ex) {
- // Fail right away if there is no retry configuration
- if (spec.getRetryConfiguration() == null
- || !spec.getRetryConfiguration().getRetryPredicate().test(ex)) {
- DYNAMO_DB_WRITE_FAILURES.inc();
- LOG.info(
- "Unable to write batch items {}.", batchRequest.requestItems().entrySet(), ex);
- throw new IOException("Error writing to DynamoDB (no attempt made to retry)", ex);
- }
-
- if (!BackOffUtils.next(sleeper, backoff)) {
- throw new IOException(
- String.format(
- "Error writing to DynamoDB after %d attempt(s). No more attempts allowed",
- attempt),
- ex);
- } else {
- // Note: this used in test cases to verify behavior
- LOG.warn(String.format(RETRY_ATTEMPT_LOG, attempt), ex);
- }
- }
+ .collect(groupingBy(KV::getKey, mapping(KV::getValue, toList())));
+
+ // Backoff used to resume from partial failures
+ BackOff resume = resumeBackoff.backoff();
+ do {
+ BatchWriteItemRequest batchRequest =
+ BatchWriteItemRequest.builder().requestItems(writesPerTable).build();
+ // If unprocessed items remain, we have to resume the operation (with backoff)
+ writesPerTable = writeWithRetries(batchRequest).unprocessedItems();
+ } while (!writesPerTable.isEmpty() && BackOffUtils.next(Sleeper.DEFAULT, resume));
+
+ if (!writesPerTable.isEmpty()) {
+ DYNAMO_DB_WRITE_FAILURES.inc();
+ LOG.warn(RESUME_ERROR_LOG, writesPerTable);
Review comment:
👍 increased it to error
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[GitHub] [beam] aromanenko-dev commented on a change in pull request #15964: [BEAM-13209] Fix DynamoDBIO.write to properly handle partial success (SDK v2)
Posted by GitBox <gi...@apache.org>.
aromanenko-dev commented on a change in pull request #15964:
URL: https://github.com/apache/beam/pull/15964#discussion_r768827317
##########
File path: sdks/java/io/amazon-web-services2/src/main/java/org/apache/beam/sdk/io/aws2/dynamodb/DynamoDBIO.java
##########
@@ -542,54 +562,64 @@ private void flushBatch() throws IOException, InterruptedException {
if (batch.isEmpty()) {
return;
}
-
try {
- // Since each element is a KV<tableName, writeRequest> in the batch, we need to group them
- // by tableName
- Map<String, List<WriteRequest>> mapTableRequest =
+ // Group values KV<tableName, writeRequest> by tableName
+ // Note: The original order of arrival is lost reading the map entries.
+ Map<String, List<WriteRequest>> writesPerTable =
batch.values().stream()
- .collect(
- Collectors.groupingBy(
- KV::getKey, Collectors.mapping(KV::getValue, Collectors.toList())));
-
- BatchWriteItemRequest batchRequest =
- BatchWriteItemRequest.builder().requestItems(mapTableRequest).build();
-
- Sleeper sleeper = Sleeper.DEFAULT;
- BackOff backoff = retryBackoff.backoff();
- int attempt = 0;
- while (true) {
- attempt++;
- try {
- client.batchWriteItem(batchRequest);
- break;
- } catch (Exception ex) {
- // Fail right away if there is no retry configuration
- if (spec.getRetryConfiguration() == null
- || !spec.getRetryConfiguration().getRetryPredicate().test(ex)) {
- DYNAMO_DB_WRITE_FAILURES.inc();
- LOG.info(
- "Unable to write batch items {}.", batchRequest.requestItems().entrySet(), ex);
- throw new IOException("Error writing to DynamoDB (no attempt made to retry)", ex);
- }
-
- if (!BackOffUtils.next(sleeper, backoff)) {
- throw new IOException(
- String.format(
- "Error writing to DynamoDB after %d attempt(s). No more attempts allowed",
- attempt),
- ex);
- } else {
- // Note: this used in test cases to verify behavior
- LOG.warn(String.format(RETRY_ATTEMPT_LOG, attempt), ex);
- }
- }
+ .collect(groupingBy(KV::getKey, mapping(KV::getValue, toList())));
+
+ // Backoff used to resume from partial failures
+ BackOff resume = resumeBackoff.backoff();
+ do {
+ BatchWriteItemRequest batchRequest =
+ BatchWriteItemRequest.builder().requestItems(writesPerTable).build();
+ // If unprocessed items remain, we have to resume the operation (with backoff)
+ writesPerTable = writeWithRetries(batchRequest).unprocessedItems();
+ } while (!writesPerTable.isEmpty() && BackOffUtils.next(Sleeper.DEFAULT, resume));
+
+ if (!writesPerTable.isEmpty()) {
+ DYNAMO_DB_WRITE_FAILURES.inc();
+ LOG.warn(RESUME_ERROR_LOG, writesPerTable);
Review comment:
Should it be `error` log level?
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