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Steve Loughran commented on HADOOP-13786: ----------------------------------------- MR test failure assumed spurious: {code} java.util.ServiceConfigurationError: org.apache.hadoop.security.token.TokenIdentifier: Provider org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier not found at java.util.ServiceLoader.fail(ServiceLoader.java:239) at java.util.ServiceLoader.access$300(ServiceLoader.java:185) at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:372) at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404) at java.util.ServiceLoader$1.next(ServiceLoader.java:480) at org.apache.hadoop.security.token.Token.getClassForIdentifier(Token.java:149) at org.apache.hadoop.security.token.Token.decodeIdentifier(Token.java:170) at org.apache.hadoop.security.token.Token.identifierToString(Token.java:425) at org.apache.hadoop.security.token.Token.toString(Token.java:445) at java.lang.String.valueOf(String.java:2994) at java.lang.StringBuilder.append(StringBuilder.java:131) at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:143) at org.apache.hadoop.mapreduce.security.TestTokenCache.testBinaryCredentials(TestTokenCache.java:116) at org.apache.hadoop.mapreduce.security.TestTokenCache.testBinaryCredentialsWithoutScheme(TestTokenCache.java:67) {code} otherwise, there isn't enough test coverage, or even the MR integration, for this to be ready to think about committing. I've stuck it up to give people progress. Key point: we can use delayed MPU completion for 0-rename writes, caching the information needed for the operation in S3 itself. We are yet to show that this works for MR code > Add S3Guard committer for zero-rename commits to consistent S3 endpoints > ------------------------------------------------------------------------ > > Key: HADOOP-13786 > URL: https://issues.apache.org/jira/browse/HADOOP-13786 > Project: Hadoop Common > Issue Type: New Feature > Components: fs/s3 > Affects Versions: HADOOP-13345 > Reporter: Steve Loughran > Assignee: Steve Loughran > Attachments: HADOOP-13786-HADOOP-13345-001.patch, > HADOOP-13786-HADOOP-13345-002.patch > > > A goal of this code is "support O(1) commits to S3 repositories in the > presence of failures". Implement it, including whatever is needed to > demonstrate the correctness of the algorithm. (that is, assuming that s3guard > provides a consistent view of the presence/absence of blobs, show that we can > commit directly). > I consider ourselves free to expose the blobstore-ness of the s3 output > streams (ie. not visible until the close()), if we need to use that to allow > us to abort commit operations. -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org