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HADOOP-17454. [s3a] Disable bucket existence check - set fs.s3a.bucket.probe to 0 #2593

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Merged
merged 1 commit into from
Jan 5, 2021
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HADOOP-17454. [s3a] Disable bucket existence check - set fs.s3a.bucket.probe to 0 #2593

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2 changes: 1 addition & 1 deletion hadoop-tools/hadoop-aws/src/main/java/org/apache/hadoop/fs/s3a/Constants.java
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Expand Up @@ -499,7 +499,7 @@ private Constants() {
* will be validated using {@code S3AFileSystem.verifyBucketExistsV2()}.
* Value: {@value}
*/
public static final int S3A_BUCKET_PROBE_DEFAULT = 2;
public static final int S3A_BUCKET_PROBE_DEFAULT = 0;

/**
* How long a directory listing in the MS is considered as authoritative.
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4 changes: 2 additions & 2 deletions hadoop-tools/hadoop-aws/src/site/markdown/tools/hadoop-aws/index.md
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Expand Up @@ -1039,9 +1039,9 @@ options are covered in [Testing](./testing.md).

<property>
<name>fs.s3a.bucket.probe</name>
<value>2</value>
<value>0</value>
<description>
The value can be 0, 1 or 2 (default).
The value can be 0 (default), 1 or 2.
When set to 0, bucket existence checks won't be done
during initialization thus making it faster.
Though it should be noted that when the bucket is not available in S3,
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1 change: 1 addition & 0 deletions hadoop-tools/hadoop-aws/src/test/java/org/apache/hadoop/fs/s3a/ITestS3AConfiguration.java
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Expand Up @@ -159,6 +159,7 @@ private <E extends Throwable> E expectFSCreateFailure(
return intercept(clazz,
() -> {
fs = S3ATestUtils.createTestFileSystem(conf);
fs.listFiles(new Path("/"), false);
return "expected failure creating FS " + text + " got " + fs;
});
}
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