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[HDFS-13999] Bogus missing block warning if the file is under construction when NN starts - HDFS - [issue]
...We found an interesting case where web UI displays a few missing blocks, but it doesn't state which files are corrupt. What'll also happen is that fsck states the file system is healthy. Thi...    Author: Wei-Chiu Chuang , 2018-10-18, 02:28
[HADOOP-15861] Move DelegationTokenIssuer to the right path - Hadoop - [issue]
...The addendum path of HADOOP-14445 updated the package name of DelegationTokenIssuer, but it didn't update the patch.It is currently under hadoop-common-project/hadoop-common/src/main/java/or...    Author: Wei-Chiu Chuang , 2018-10-17, 16:55
[HADOOP-14445] Use DelegationTokenIssuer to create KMS delegation tokens that can authenticate to all KMS instances - Hadoop - [issue]
...As discovered in HADOOP-14441, KMS HA using LoadBalancingKMSClientProvider do not share delegation tokens. (a client uses KMS address/port as the key for delegation token)DelegationTokenAuth...    Author: Wei-Chiu Chuang , 2018-10-17, 04:52
[HDFS-13662] TestBlockReaderLocal#testStatisticsForErasureCodingRead is flaky - HDFS - [issue]
...The test failed in this precommit for a patch that only modifies an unrelated test.    Author: Wei-Chiu Chuang , 2018-10-17, 02:37
[HADOOP-15840] Slow RPC logger too spammy - Hadoop - [issue]
...HADOOP-12325 added a capability where "slow" RPCs are logged in NN log when ipc.server.log.slow.rpc is enabled.The "slow" RPCs are supposed to be those whose processing time is outside 3 sta...    Author: Wei-Chiu Chuang , 2018-10-10, 17:20
Does Hbase backup process support encryption while transporting the data from one cluster to other cluster - HBase - [mail # dev]
...Hi neo0731,depending on what you mean by encryption, it can mean Hadoop at-restencryption, Hadoop data transport encryption, Hadoop RPC necryption, HBasedata transport encryption, Hbase RPC ...
   Author: Wei-Chiu Chuang , 2018-10-09, 14:55
[HDFS-12036] Add audit log for some erasure coding operations - HDFS - [issue]
...These three FSNameSystem operations do not yet record audit logs. I am not sure how useful these audit logs would be, but thought I should file them so that they don't get dropped if they tu...    Author: Wei-Chiu Chuang , 2018-10-08, 18:14
[HADOOP-15814] Maven 3.3.3 unable to parse pom file - Hadoop - [issue]
...Found via HDFS-13952.Reproducible on Maven 3.3.3, but not a problem for Maven 3.5.0 and above.I had to make the following change in order to compile. Looks like a problem after the ABFS merg...    Author: Wei-Chiu Chuang , 2018-10-03, 16:52
[expand - 2 more] - [DISCUSS] Deprecate fuse-dfs - Hadoop - [mail # dev]
...Thank you Shingo,Could you shade more lights on the ML use case? Is it because the MLframeworks are not written in Java so they can't use HDFS client libraries?How about using WebHDFS? I'm s...
   Author: Wei-Chiu Chuang , 2018-10-02, 14:22
NN run progressively slower - HDFS - [mail # dev]
...Yiqun,Is this related to HDFS-9260?Note that HDFS-9260 was backported since CDH5.7 and above.I'm interested to learn more. Did you observe clients failing to close filedue to insufficient nu...
   Author: Wei-Chiu Chuang , 2018-09-26, 03:14