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[HBASE-7590] Add a costless notifications mechanism from master to regionservers & clients - HBase - [issue]
...t would be very useful to add a mechanism to distribute some information to the clients and regionservers. Especially It would be useful to know globally (regionservers + clients apps) that ...    Author: Nicolas Liochon , 2017-07-17, 10:38
[HBASE-11590] use a specific ThreadPoolExecutor - HBase - [issue]
...The JDK TPE creates all the threads in the pool. As a consequence, we create (by default) 256 threads even if we just need a few.The attached TPE create threads only if we have something in ...    Author: Nicolas Liochon , 2017-07-03, 04:58
[HBASE-9491] KeyValue is still visible to client code through the coprocessor API - HBase - [issue]
...See objectives of HBASE-9245 and sub jiras... The guilty is in WALEdit....    Author: Nicolas Liochon , 2017-04-07, 18:23
[HBASE-8731] Use the JDK 1.7 in the precommit env for trunk - HBase - [issue]
...HBase today uses the jdk 1.6. In the past it created issues when we tried to use 1.7 for the core build while the precommit was on 1.6.Having the precommit on 1.7 would solve this.The best i...    Author: Nicolas Liochon , 2016-08-09, 04:08
[HDFS-4754] Add an API in the namenode to mark a datanode as stale - HDFS - [issue]
...There is a detection of the stale datanodes in HDFS since HDFS-3703, with a timeout, defaulted to 30s.There are two reasons to add an API to mark a node as stale even if the timeout is not y...    Author: Nicolas Liochon , 2016-06-13, 00:33
[HADOOP-9334] Update netty version - Hadoop - [issue]
...There are newer version available. HBase for example depends on the 3.5.9.Latest 3.5 is 3.5.11, there is the 3.6.3 as well.While there is no point in trying to have exactly the same version,...    Author: Nicolas Liochon , 2016-05-12, 18:27
[HDFS-3705] Add the possibility to mark a node as 'low priority' for read in the DFSClient - HDFS - [issue]
...This has been partly discussed in HBASE-6435.The DFSClient includes a 'bad nodes' management for reads and writes. Sometimes, the client application already know that some deads are dead or ...    Author: Nicolas Liochon , 2016-05-12, 18:14
[HDFS-3703] Decrease the datanode failure detection time - HDFS - [issue]
...By default, if a box dies, the datanode will be marked as dead by the namenode after 10:30 minutes. In the meantime, this datanode will still be proposed  by the nanenode to write block...    Author: Nicolas Liochon , 2016-05-12, 18:13
Inconsistent scan performance - HBase - [mail # user]
...The read path is much more complex than the write one, so the response timehas much more variance.The gap is so wide here that I would bet on Ted's or Stack's points, buthere are a few other...
   Author: Nicolas Liochon , 2016-03-25, 09:42
[HBASE-5939] Add an autorestart option in the start scripts - HBase - [issue]
...When a binary dies on a server, we don't try to restart it while it would be possible in most cases.We can have something as:loop start wait if cleanStop then exit if alr...    Author: Nicolas Liochon , 2016-03-23, 23:12