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Apache Kylin : Analytical Data Warehouse for Big Data

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ModulePropertyDefault ValueOptional ValueDescription

kylin.env

DEVQA, PROD, LOCALThe environment of Kylin. DEV will turn on some dev features, QA and PROD has no difference in terms of functions.

kylin.env.hdfs-working-dir

/kylin


Working folder in HDFS, better be qualified absolute path, make sure user has the right permission to this directory


kylin.env.zookeeper-base-path

/kylin

kylin zk base path


kylin.env.zookeeper-is-local
false
Run a TestingServer for curator locally

kylin.env.zookeeper-connect-string
sandbox.hortonworks.com

Connect to a remote zookeeper with the url, should set kylin.env.zookeeper-is-local to false

kylin.env.hadoop-conf-dir
/etc/hadoop/conf

Hadoop conf folder, will export this as "HADOOP_CONF_DIR" to run spark-submit. This must contain site xmls of core, yarn, hive, and hbase in one folder

kylin.env.hdfs-metastore-bigcell-dir
kylin.env.hdfs-metastore-bigcell-dir



kylin.env.zookeeper-base-sleep-time
3000


kylin.job.zookeeper-monitor-interval
30


kylin.env.zookeeper.zk-auth
digest:ADMIN:KYLIN



kylin.env.zookeeper-acl-enabled
false







kylin.metadata.url
kylin_metadata@hbase

The metadata store in hbase

kylin.metadata.sync-retries
3
metadata cache sync retry times

kylin.metadata.sync-error-handler

MockupErrHandler







kylin.server.mode
allquery, job
Kylin server mode, valid value [all, query, job]

kylin.server.cluster-servers
localhost:7070
List of web servers in use, this enables one web server instance to sync up with other servers.

kylin.server.query-metrics-percentiles-intervals
60, 360, 3600

kylin query metrics percentiles intervals default=60, 300, 3600

kylin.server.host-address
localhost:7070
get server rest address

kylin.server.cluster-name




kylin.server.init-tasks




kylin.server.sequence-sql.workers-per-server
1


kylin.server.sequence-sql.expire-time
86400000


kylin.server.query-metrics-enabled
false


kylin.server.query-metrics2-enabled
false


kylin.server.auth-user-cache.expire-seconds
300


kylin.server.auth-user-cache.max-entries
100


kylin.server.external-acl-provider




kylin.server.cluster-servers-with-mode









kylin.storage.hbase.owner-tag
whoami@kylin.apache.org

Optional information for the owner of kylin platform, it can be your team's email, Currently it will be attached to each kylin's htable attribute

kylin.storage.url
hbase
The storage for final cube file in hbase

kylin.storage.hbase.cluster-fs


HBase Cluster FileSystem, which serving hbase, format as hdfs://hbase-cluster:8020, Leave empty if hbase running on same cluster with hive and mapreduce

kylin.storage.hbase.compression-codec
gzip
default compression codec for htable,snappy,lzo,gzip,lz4

kylin.storage.hbase.namespacedefault


kylin.storage.hbase.cluster-hdfs-config-file




kylin.storage.hbase.region-cut-gb
0.1
The cut size for hbase region, in GB. E.g, for cube whose capacity be marked as "SMALL", split region per 10GB by default

kylin.storage.hbase.min-region-count
1


kylin.storage.hbase.max-region-count
500


kylin.storage.hbase.hfile-size-gb
2
The hfile size of GB, smaller hfile leading to the converting hfile MR has more reducers and be faster. set 0 to disable this optimization

kylin.storage.hbase.run-local-coprocessor
false


kylin.storage.hbase.coprocessor-mem-gb
3.0


kylin.storage.partition.aggr-spill-enabled
true


kylin.storage.partition.max-scan-bytes
3L * 1024 * 1024 * 1024



kylin.storage.hbase.coprocessor-timeout-seconds
0


kylin.storage.hbase.max-fuzzykey-scan
200


kylin.storage.hbase.max-fuzzykey-scan-split
1


kylin.storage.hbase.max-visit-scanrange
1000000



kylin.storage.hbase.gtstorage
org.apache.kylin.storage.hbase.cube.v2.CubeHBaseEndpointRPC



kylin.storage.hbase.scan-cache-rows
1024


kylin.storage.hbase.region-cut-gb
5.0


kylin.storage.hbase.max-scan-result-bytes
5 * 1024 * 1024



kylin.storage.hbase.compression-codec
none


kylin.storage.hbase.rowkey-encoding
FAST_DIFF


kylin.storage.hbase.block-size-bytes
1048576


kylin.storage.hbase.small-family-block-size-bytes
65536


kylin.storage.hbase.endpoint-compress-result
true


kylin.storage.hbase.max-hconnection-threads
2048


kylin.storage.hbase.core-hconnection-threads
2048


kylin.storage.hbase.hconnection-threads-alive-seconds
60


kylin.storage.hbase.replication-scope
0


kylin.storage.clean-after-delete-operation
false


kylin.storage.project-isolation-enable
true

















kylin.storage.limit-push-down-enabled
true


kylin.storage.provider
org.apache.kylin.common.storage.DefaultStorageProvider



kylin.storage.columnar.shard-size-mb
128


kylin.storage.columnar.shard-rowcount
2500000


kylin.storage.columnar.shard-countdistinct-rowcount
1000000


kylin.storage.columnar.repartition-threshold-size-mb
128


kylin.storage.columnar.shard-min
1


kylin.storage.columnar.shard-max
1000


kylin.storage.columnar.hdfs-blocksize-bytes
5 * shard_size



kylin.storage.columnar.shard-expand-factor
10


kylin.storage.columnar.dfs-replication
3


kylin.storage.columnar.jdbc.file-system




kylin.storage.default
2


kylin.storage.hbase.table-name-prefix
KYLIN_


























Configurations remained from Kylin3.x



ModulePropertyDescription









Configurations removed from Kylin3.X

ModulePropertyDescription









New configurations 

ModulePropertyDescription









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