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https://issues.apache.org/jira/browse/HADOOP-15845?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16646633#comment-16646633
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Steve Loughran commented on HADOOP-15845:
-----------------------------------------
{code}
bin/hadoop s3guard init
2018-10-11 16:29:27,391 [main] INFO s3guard.DynamoDBMetadataStore
(DynamoDBMetadataStore.java:createTable(1365)) - Creating non-existent DynamoDB
table shared-table in region eu-west-1
2018-10-11 16:30:38,224 [main] INFO s3guard.S3GuardTool
(S3GuardTool.java:initMetadataStore(273)) - Metadata store
DynamoDBMetadataStore{region=eu-west-1, tableName=shared-table, tableArn=null}
is initialized.
Metadata Store Diagnostics:
ARN=arn:aws:dynamodb:eu-west-1:980678866538:table/shared-table
description=S3Guard metadata store in DynamoDB
name=shared-table
persist.authoritative.bit=true
read-capacity=500
region=eu-west-1
retryPolicy=ExponentialBackoffRetry(maxRetries=9, sleepTime=250
MILLISECONDS)
size=0
status=ACTIVE
table={AttributeDefinitions: [{AttributeName: child,AttributeType: S},
{AttributeName: parent,AttributeType: S}],TableName: shared-table,KeySchema:
[{AttributeName: parent,KeyType: HASH}, {AttributeName: child,KeyType:
RANGE}],TableStatus: ACTIVE,CreationDateTime: Thu Oct 11 16:29:27 BST
2018,ProvisionedThroughput: {NumberOfDecreasesToday: 0,ReadCapacityUnits:
500,WriteCapacityUnits: 100},TableSizeBytes: 0,ItemCount: 0,TableArn:
arn:aws:dynamodb:eu-west-1:980678866538:table/shared-table,TableId:
e52c8e87-dafa-4fa9-9642-98b4a90e4b73,}
write-capacity=100
{code}
> s3guard init and destroy command will create/destroy tables if ddb.table &
> region are set
> -----------------------------------------------------------------------------------------
>
> Key: HADOOP-15845
> URL: https://issues.apache.org/jira/browse/HADOOP-15845
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 3.1.1
> Reporter: Steve Loughran
> Priority: Major
>
> If you have s3guard set up with a table name and a region, then s3guard init
> will automatically create the table, without you specifying a bucket or URI.
> I had expected the command just to print out its arguments, but it actually
> did the init with the default bucket values
> Even worse, `hadoop s3guard destroy` will destroy the table.
> This is too dangerous to allow. The command must require either the name of a
> bucket or an an explicit ddb table URI
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