Kihwal Lee created MAPREDUCE-7177: ------------------------------------- Summary: Disable speculative execution in TestDFSIO Key: MAPREDUCE-7177 URL: https://issues.apache.org/jira/browse/MAPREDUCE-7177 Project: Hadoop Map/Reduce Issue Type: Bug Affects Versions: 2.8.5, 3.2.0 Reporter: Kihwal Lee
When TestDFSIO runs in a certain environment where a subset of mappers are slow, the speculative execution can start. In the write phase, this will make existing mapper to fail in next addBlock() since the output files are overwritten. To make the benchmark more predictable and repeatable, speculation must be implicitly disabled in TestDFSIO itself. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-dev-h...@hadoop.apache.org