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https://issues.apache.org/jira/browse/KYLIN-4833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17256253#comment-17256253
]
ASF GitHub Bot commented on KYLIN-4833:
---------------------------------------
fengpod commented on a change in pull request #1494:
URL: https://github.com/apache/kylin/pull/1494#discussion_r549922369
##########
File path:
storage-hbase/src/main/java/org/apache/kylin/storage/hbase/steps/HBaseJobSteps.java
##########
@@ -63,6 +64,13 @@ public HadoopShellExecutable createCreateHTableStep(String
jobId, CuboidModeEnum
appendExecCmdParameters(cmd, BatchConstants.ARG_SEGMENT_ID,
seg.getUuid());
appendExecCmdParameters(cmd, BatchConstants.ARG_PARTITION,
getRowkeyDistributionOutputPath(jobId) + "/part-r-00000");
+ if(this.seg.getConfig().isHFileDistCP()){
+ String partitionOutputPath = getRealizationRootPath(jobId) +
"/rowkey_stats/part-r-00000_hfile";
+ appendExecCmdParameters(cmd, BatchConstants.ARG_PARTITION,
partitionOutputPath);
+ }else {
+ appendExecCmdParameters(cmd, BatchConstants.ARG_PARTITION,
Review comment:
new commit fixed this
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> use distcp to control the speed of writting hfile data to hbase cluster
> -----------------------------------------------------------------------
>
> Key: KYLIN-4833
> URL: https://issues.apache.org/jira/browse/KYLIN-4833
> Project: Kylin
> Issue Type: Improvement
> Components: Storage - HBase
> Affects Versions: v3.1.1
> Reporter: fengpod
> Assignee: fengpod
> Priority: Minor
> Fix For: v3.1.2
>
>
> When a large data is written to hbase cluster at the same time，the cluster
> load will become very high，which will affect the query performance. This pr
> allows data to be written data to hadoop hdfs when doing step “Convert Cuboid
> Data to HFile”，and then hfile will be transferred to the hbase cluster by
> DistCp。DistCp controls the speed of write data so as to reduce the pressure
> of cluster。 This pr adds a new step " HFile Distcp To HBase" between “Convert
> Cuboid Data to HFile” and "Load HFile to HBase Table" 。As look like this：
> !https://user-images.githubusercontent.com/4843586/100835711-013fae00-34a9-11eb-8de8-e69228ba0991.png!
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