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Posted to common-issues@hadoop.apache.org by "Rajesh Balamohan (JIRA)" <ji...@apache.org> on 2016/12/22 07:10:58 UTC
[jira] [Commented] (HADOOP-13934) S3Guard: DynamoDBMetaStore::move
throws exception with limited info
[ https://issues.apache.org/jira/browse/HADOOP-13934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15769320#comment-15769320 ]
Rajesh Balamohan commented on HADOOP-13934:
-------------------------------------------
Suspecting the API limit in batchitem (http://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_BatchWriteItem.html). If the number of items are > 25, it could end up throwing this exception. It might be good to invoke this in micro batches?
> S3Guard: DynamoDBMetaStore::move throws exception with limited info
> -------------------------------------------------------------------
>
> Key: HADOOP-13934
> URL: https://issues.apache.org/jira/browse/HADOOP-13934
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Reporter: Rajesh Balamohan
> Priority: Minor
> Fix For: 2.9.0
>
>
> When using {{DynamoDBMetadataStore}} with a insert heavy hive app , it started throwing exceptions in {{DynamoDBMetadataStore::move}}. But just with the following exception, it is relatively hard to debug on the real issue in DynamoDB side.
> {noformat}
> Caused by: com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: 1 validation error detected: Value '{ddb-table-name-334=[com.amazonaws.dynamodb.v20120810.WriteRequest@ca1da583, com.amazonaws.dynamodb.v20120810.WriteRequest@ca1fc7cd, com.amazonaws.dynamodb.v20120810.WriteRequest@ca4244e6, com.amazonaws.dynamodb.v20120810.WriteRequest@ca2f58a9, com.amazonaws.dynamodb.v20120810.WriteRequest@ca3525f8,
> ...
> ...
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1529)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1167)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:948)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:661)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:635)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:618)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutor.access$300(AmazonHttpClient.java:586)
> at com.amazonaws.http.AmazonHttpClient$RequestExecutionBuilderImpl.execute(AmazonHttpClient.java:573)
> at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:445)
> at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.doInvoke(AmazonDynamoDBClient.java:1722)
> at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.invoke(AmazonDynamoDBClient.java:1698)
> at com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient.batchWriteItem(AmazonDynamoDBClient.java:668)
> at com.amazonaws.services.dynamodbv2.document.internal.BatchWriteItemImpl.doBatchWriteItem(BatchWriteItemImpl.java:111)
> at com.amazonaws.services.dynamodbv2.document.internal.BatchWriteItemImpl.batchWriteItem(BatchWriteItemImpl.java:52)
> at com.amazonaws.services.dynamodbv2.document.DynamoDB.batchWriteItem(DynamoDB.java:178)
> at org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore.move(DynamoDBMetadataStore.java:351)
> ... 28 more
> {noformat}
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