steveloughran commented on a change in pull request #1576: Hadoop 16520 dynamodb ms version race refactor. URL: https://github.com/apache/hadoop/pull/1576#discussion_r330636147
########## File path: hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/s3guard/DynamoDBMetadataStoreTableHandler.java ########## @@ -0,0 +1,651 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.hadoop.fs.s3a.s3guard; + +import java.io.FileNotFoundException; +import java.io.IOException; +import java.io.InterruptedIOException; +import java.util.ArrayList; +import java.util.Date; +import java.util.List; +import java.util.Map; +import java.util.Optional; + +import com.amazonaws.AmazonClientException; +import com.amazonaws.SdkBaseException; +import com.amazonaws.services.dynamodbv2.AmazonDynamoDB; +import com.amazonaws.services.dynamodbv2.document.DynamoDB; +import com.amazonaws.services.dynamodbv2.document.Item; +import com.amazonaws.services.dynamodbv2.document.PrimaryKey; +import com.amazonaws.services.dynamodbv2.document.PutItemOutcome; +import com.amazonaws.services.dynamodbv2.document.Table; +import com.amazonaws.services.dynamodbv2.model.BillingMode; +import com.amazonaws.services.dynamodbv2.model.CreateTableRequest; +import com.amazonaws.services.dynamodbv2.model.ListTagsOfResourceRequest; +import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughput; +import com.amazonaws.services.dynamodbv2.model.ProvisionedThroughputDescription; +import com.amazonaws.services.dynamodbv2.model.ResourceInUseException; +import com.amazonaws.services.dynamodbv2.model.ResourceNotFoundException; +import com.amazonaws.services.dynamodbv2.model.ScanRequest; +import com.amazonaws.services.dynamodbv2.model.ScanResult; +import com.amazonaws.services.dynamodbv2.model.TableDescription; +import com.amazonaws.services.dynamodbv2.model.Tag; +import com.amazonaws.services.dynamodbv2.model.TagResourceRequest; +import com.amazonaws.waiters.WaiterTimedOutException; +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Preconditions; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.s3a.AWSClientIOException; +import org.apache.hadoop.fs.s3a.Invoker; +import org.apache.hadoop.fs.s3a.Retries; +import org.apache.hadoop.io.retry.RetryPolicies; +import org.apache.hadoop.io.retry.RetryPolicy; + +import static java.lang.String.valueOf; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_CAPACITY_READ_DEFAULT; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_CAPACITY_READ_KEY; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_CAPACITY_WRITE_DEFAULT; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_CAPACITY_WRITE_KEY; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_CREATE_KEY; +import static org.apache.hadoop.fs.s3a.Constants.S3GUARD_DDB_TABLE_TAG; +import static org.apache.hadoop.fs.s3a.S3AUtils.translateException; +import static org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore.E_ON_DEMAND_NO_SET_CAPACITY; +import static org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore.VERSION; +import static org.apache.hadoop.fs.s3a.s3guard.DynamoDBMetadataStore.VERSION_MARKER; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.attributeDefinitions; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.createVersionMarker; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.createVersionMarkerPrimaryKey; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.extractCreationTimeFromMarker; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.extractVersionFromMarker; +import static org.apache.hadoop.fs.s3a.s3guard.PathMetadataDynamoDBTranslation.keySchema; + +/** + * Table handling for dynamo tables, factored out from DynamoDBMetadataStore + * Mainly + */ +public class DynamoDBMetadataStoreTableHandler { + public static final Logger LOG = LoggerFactory.getLogger( + DynamoDBMetadataStoreTableHandler.class); + + /** Error: version marker not found in table but the table is not empty. */ + public static final String E_NO_VERSION_MARKER_AND_NOT_EMPTY + = "S3Guard table lacks version marker, and not empty."; Review comment: "and is not empty" ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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