Apache Kylin : Analytical Data Warehouse for Big Data
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Spark Job Option
Property Required Priority Datatype Default Description Version Reference kylin.engine.spark.build-class-name
no low String org.apache.kylin.engine.spark.job.CubeBuildJob
For developer only. The className use in spark-submit. 4.0+ kylin.engine.spark.cluster-info-fetcher-class-name
yes String org.apache.kylin.cluster.YarnInfoFetcher
Fetch yarn information of spark job kylin.engine.spark-conf.XXX
String Spark configurations want to override for build job like "spark.driver.cores". If don't set these spark properties, kylin will automaticly adjust these properties before submitting build job. Adaptively-adjust-spark-parameters kylin.storage.provider
no String org.apache.kylin.common.storage.DefaultStorageProvider
不同的云厂商返回的 ContentSummary 对象不尽相同, 需要针对性地提供实现
请参考 org.apache.kylin.common.storage.IStorageProvider
kylin.engine.spark.merge-class-name
no String org.apache.kylin.engine.spark.job.CubeMergeJob
For developer only. The className use in spark-submit kylin.engine.spark.task-impact-instance-enabled
no Boolean true Check kylin.engine.spark.task-core-factor. If kylin.engine.spark.task-impact-instance-enabled is set to true and kylin.engine.spark-conf.spark.executor.instances is not set, Kylin will calculate spark.executor.instances for Build Engine. 4.0+ Adaptively-adjust-spark-parameters kylin.engine.spark.task-core-factor
no Integer 3 kylin.engine.driver-memory-base
no Integer 1024 Auto adujst spark.driver.memory for Build Engine if kylin.engine.spark-conf.spark.driver.memory is not set. Adaptively-adjust-spark-parameters kylin.engine.driver-memory-strategy
no kylin.engine.driver-memory-maximum
no Integer 4096 kylin.engine.persist-flattable-threshold
no 1 If the number of cuboids which will be build from flat table is bigger than this threshold, the flat table will be persisted into $HDFS_WORKING_DIR/job_tmp/flat_table for saving more memory. kylin.snapshot.parallel-build-timeout-seconds
no
如果希望提升快照的构建速度的话, 可以设置这个kylin.snapshot.parallel-build-enabled
no Boolean kylin.spark-conf.auto.prior
no Boolean 是否需要自动设置一些 SparkConf kylin.engine.submit-hadoop-conf-dir
Set HADOOP_CONF_DIR for spark-submit.
kylin.storage.columnar.shard-size-mb
和 Shard 相关的一系列配置, 我暂时还不懂ylin.storage.columnar.shard-rowcount
kylin.storage.columnar.shard-countdistinct-rowcount
kylin.query.spark-engine.join-memory-fraction
限制 广播Join使用的内存, 这个名字是不是有问题, 为啥是 query 开头