FAQ

The Apache™ Hadoop™ project develops open-source software for reliable, scalable, distributed computing. The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using a simple programming model. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-avaiability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-availabile service on top of a cluster of computers, each of which may be prone to failures.

Courtesy of Apache Hadoop

There are currently 67 groups being archived for Hadoop.

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247,076
issues HBase > issues (2016)
134,195
dev Hive > dev (2016)
80,805
common-dev Hadoop > common-dev (2013)
57,493
dev HBase > dev (2016)
57,058
hdfs-issues Hadoop > hdfs-issues (2013)
56,917
mapreduce-issues Hadoop > mapreduce-issues (2013)
51,225
dev Kafka > dev (2016)
50,592
user HBase > user (2016)
43,402
common-issues Hadoop > common-issues (2013)
40,458
common-user Hadoop > common-user (2013)
37,096
dev Pig > dev (2013)
37,087
commits HBase > commits (2016)
35,121
dev ZooKeeper > dev (2016)
31,091
dev Sqoop > dev (2016)
23,337
user Hive > user (2016)
22,308
commits Hive > commits (2016)
20,446
common-commits Hadoop > common-commits (2013)
19,878
users Kafka > users (2016)
17,118
cdh-user Hadoop > cdh-user (2014)
14,381
dev Avro > dev (2014)
12,790
user Pig > user (2013)
11,621
zookeeper-dev ZooKeeper > zookeeper-dev (2010)
10,453
mapreduce-user Hadoop > mapreduce-user (2013)
8,985
hdfs-dev Hadoop > hdfs-dev (2013)
8,944
mapreduce-dev Hadoop > mapreduce-dev (2013)
7,883
hdfs-user Hadoop > hdfs-user (2013)
7,579
hue-dev Hadoop > hue-dev (2014)
7,378
user ZooKeeper > user (2016)
7,360
dev Whirr > dev (2015)
6,671
scm-users Hadoop > scm-users (2014)
5,909
commits Pig > commits (2013)
5,844
general Hadoop > general (2013)
5,329
mapreduce-commits Hadoop > mapreduce-commits (2013)
5,301
hdfs-commits Hadoop > hdfs-commits (2013)
5,086
hue-issues Hadoop > hue-issues (2014)
5,042
dev Flume > dev (2013)
4,873
user Hadoop > user (2013)
4,542
impala-user Hadoop > impala-user (2014)
4,372
hue-user Hadoop > hue-user (2014)
4,053
commits ZooKeeper > commits (2016)
3,832
commits Kafka > commits (2016)
3,698
user Sqoop > user (2016)
3,388
yarn-issues Hadoop > yarn-issues (2013)
3,279
user Avro > user (2014)
2,996
hue-commits Hadoop > hue-commits (2014)
2,717
commits Sqoop > commits (2016)
2,447
zookeeper-user ZooKeeper > zookeeper-user (2010)
2,349
cascalog-user Clojure > cascalog-user (2014)
1,707
user Flume > user (2013)
1,680
commits Avro > commits (2014)
1,447
user Whirr > user (2015)
1,386
rhadoop Hadoop > rhadoop (2014)
951
commits Flume > commits (2013)
928
cdh-dev Hadoop > cdh-dev (2014)
868
yarn-dev Hadoop > yarn-dev (2013)
837
zookeeper-commits ZooKeeper > zookeeper-commits (2010)
835
commits Whirr > commits (2015)
690
rhipe Hadoop > rhipe (2014)
632
yarn-commits Hadoop > yarn-commits (2013)
161
hadoop-jp Hadoop > hadoop-jp (2014)
137
hadoop-starfish Hadoop > hadoop-starfish (2014)
108
austinhug Hadoop > austinhug (2014)
103
pdx-h-d-s Hadoop > pdx-h-d-s (2014)
73
hadoop-bangalore Hadoop > hadoop-bangalore (2014)
48
stl-hadoop Hadoop > stl-hadoop (2014)
40
crunch-dev Hadoop > crunch-dev (2012)
22
crunch-users Hadoop > crunch-users (2014)

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