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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2016/05/26 14:04:12 UTC
[jira] [Commented] (HADOOP-13205) S3A to support custom retry
policies; maybe failfast on unknown host
[ https://issues.apache.org/jira/browse/HADOOP-13205?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15302106#comment-15302106 ]
Steve Loughran commented on HADOOP-13205:
-----------------------------------------
Stack trace you get today when offline
{code}
2016-05-26 13:40:00,979 [Thread-0] INFO http.AmazonHttpClient (AmazonHttpClient.java:executeHelper(496)) - Unable to execute HTTP request: steve-eu2.s3.amazonaws.com
java.net.UnknownHostException: steve-eu2.s3.amazonaws.com: unknown error
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:928)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1323)
at java.net.InetAddress.getAllByName0(InetAddress.java:1276)
at java.net.InetAddress.getAllByName(InetAddress.java:1192)
at java.net.InetAddress.getAllByName(InetAddress.java:1126)
at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:262)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:161)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:328)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:612)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:447)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:884)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:55)
at com.amazonaws.http.AmazonHttpClient.executeOneRequest(AmazonHttpClient.java:728)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:489)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:310)
at com.amazonaws.services.s3.AmazonS3Client.invoke(AmazonS3Client.java:3785)
at com.amazonaws.services.s3.AmazonS3Client.headBucket(AmazonS3Client.java:1107)
at com.amazonaws.services.s3.AmazonS3Client.doesBucketExist(AmazonS3Client.java:1070)
at org.apache.hadoop.fs.s3a.S3AFileSystem.verifyBucketExists(S3AFileSystem.java:304)
at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:283)
at org.apache.hadoop.fs.s3a.S3ATestUtils.createTestFileSystem(S3ATestUtils.java:59)
at org.apache.hadoop.fs.s3a.scale.S3AScaleTestBase.setUp(S3AScaleTestBase.java:123)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:55)
at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
{code}
> S3A to support custom retry policies; maybe failfast on unknown host
> --------------------------------------------------------------------
>
> Key: HADOOP-13205
> URL: https://issues.apache.org/jira/browse/HADOOP-13205
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/s3
> Affects Versions: 2.8.0
> Reporter: Steve Loughran
>
> Noticed today that when connections are down, S3A retries on UnknownHostExceptions logging noisily in the process.
> # it should be possible to define or customize retry policies for an FS instance (fail fast, exponential backoff, etc)
> # we may want to explicitly have a fail-fast-if-offline retry policy, catching the common connectivity ones.
> Testing will be fun here.
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