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[ANNOUNCE] Eric Payne added to the Apache Hadoop PMC
- [mail # gen]
...It is my pleasure to announce that the Apache Hadoop PMC voted to add Eric Payne as a member in recognition of his contributions to Apache Hadoop.Congratulations, Eric!Jason...
, 2017-07-25, 21:09
Apache Hadoop 2.8.2 Release Plan
- [mail # dev]
...+1 to base the 2.8.2 release off of the more recent activity on branch-2.8. Because branch-2.8.2 was cut so long ago it is missing a lot of fixes that are in branch-2.8. There also are a l...
, 2017-07-21, 15:18
[HADOOP-14669] GenericTestUtils.waitFor should use monotonic time
...GenericTestUtils.waitFor should be calling Time.monotonicNow rather than Time.now. Otherwise if the system clock adjusts during unit testing the timeout period could be incorrect....
, 2017-07-19, 15:06
- [mail # dev]
...I think we are OK to leave support for the zstd codec in the Hadoop code base. I asked Chris Mattman for clarification, noting that the support for the zstd codec requires the user to ...
, 2017-07-17, 20:30
[HADOOP-14412] HostsFileReader#getHostDetails is very expensive on large clusters
...After upgrading one of our large clusters to 2.8 we noticed many IPC server threads of the resourcemanager spending time in NodesListManager#isValidNode which in turn was calling HostsFileRe...
, 2017-05-17, 03:31
[HADOOP-9069] FileSystem.get leads to stack overflow if default FS is not configured with a scheme
...If fs.defaultFS is configured without a scheme, e.g.: "/", then FileSystem.get will infinitely recurse and lead to a stack overflow. An example stacktrace from 0.23:java.lang.StackOver...
, 2017-05-15, 12:56
[HADOOP-13362] DefaultMetricsSystem leaks the source name when a source unregisters
...Ran across a nodemanager that was spending most of its time in GC. Upon examination of the heap most of the memory was going to the map of names in org.apache.hadoop.metrics2.lib.Uniqu...
, 2017-03-29, 22:15
[VOTE] Release Apache Hadoop 2.8.0 (RC3)
- [mail # dev]
...+1 (binding)- Verfied signatures and digests- Performed a native build from the release tag- Deployed to a single node cluster- Ran some sample jobsJason On Friday, March ...
, 2017-03-17, 22:58
[HADOOP-12706] TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp times out occasionally
...TestLocalFsFCStatistics has been failing sometimes, and when it fails it appears to be from FCStatisticsBaseTest.testStatisticsThreadLocalDataCleanUp. The test is timing out when it fa...
, 2017-01-06, 01:43
[HADOOP-12191] Bzip2Factory is not thread safe
...Bzip2Factory.isNativeBzip2Loaded is not protected from multiple threads calling it simultaneously. A thread can return false from this method despite logging the fact that was going to...
, 2017-01-06, 01:40
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