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Colin Patrick McCabe
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[HDFS-8401] Memfs - a layered file system for in-memory storage in HDFS
...We propose creating a layered filesystem that can provide in-memory storage using existing features within HDFS. memfs will use lazy persist writes introduced by HDFS-6581. For reads, memfs ...
, 2015-05-29, 02:22
[HDFS-8454] Remove unnecessary throttling in TestDatanodeDeath
...The testSimple* test cases use artificial throttling in the output stream.The throttling does not look necessary to verify the correctness and the same code paths are exercised without the t...
, 2015-05-22, 16:36
[HDFS-8455] Consider skipping stress tests for precommit builds
...Our test suite includes a few stress-test type of tests. We should consider skipping in the Jenkins precommit builds. We can continue to run them in the Hudson nightly builds....
, 2015-05-21, 22:09
[HDFS-8157] Writes to RAM DISK reserve locked memory for block files
...Per discussion on HDFS-6919, the first step is that writes to RAM disk will reserve locked memory via the FsDatasetCache....
, 2015-05-17, 16:37
[HDFS-8403] Eliminate retries in TestFileCreation#testOverwriteOpenForWrite
...TestFileCreation#testOverwriteOpenForWrite attempts 5 retries to verify the failure case.The retries are not necessary to verify correct behavior....
, 2015-05-16, 17:07
[HDFS-6919] Enforce a single limit for RAM disk usage and replicas cached via locking
...The DataNode can have a single limit for memory usage which applies to both replicas cached via CCM and replicas on RAM disk.See comments 1, 2 and 3 for discussion....
, 2015-05-16, 17:04
[HDFS-8381] Reduce time taken for complete HDFS unit test run
...HDFS unit tests take a long time to run. Our unit tests are more like system/integration tests since we spin up a MiniDFSCluster for individual test cases. A number of tests have sleeps whic...
, 2015-05-14, 19:49
[HDFS-5682] Heterogeneous Storage phase 2 - APIs to expose Storage Types
...Phase 1 (HDFS-2832) added support to present the DataNode as a collection of discrete storages of different types.This Jira is to track phase 2 of the Heterogeneous Storage work which involv...
, 2015-05-13, 21:48
[HDFS-8393] Reserve locked memory for .meta files
...HDFS-8157 added locked memory reservation for block data files written to memory. We should add similar support for .meta files....
, 2015-05-13, 21:05
[HDFS-5000] DataNode configuration should allow specifying storage type
...The DataNode configuration should allow the administrator to optionally specify the storage type for each storage directory.The DataNode should send the storage type with the block report....
, 2015-04-28, 22:03
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