HBase can run on YARN or without YARN. MapReduce jobs always run on YARN, so whenever there is an HBase operation that performs a MapReduce, that will be run on YARN. ... View more

Slider uses its own Hadoop jars in the Slider lib directory. I suspect that the Hadoop client jars Slider is using are not compatible with the version of Hadoop running on the cluster. If you built Slider yourself, you could try rebuilding it with a hadoop.version that matches the version running on your cluster (you may need to adjust some other dependency versions in this case as well). Alternatively, you could try replacing the hadoop jars in the Slider lib directory, but if the versions are too far apart this will not work and you'll have to rebuild Slider. ... View more

I don't think the default hbase app package will allow you to get the region server ports through the REST API because Slider is not allocating those ports. The port is set to 0 in the hbase-site config, so hbase will pick a random port itself. If you wanted Slider to allocate the port instead, you might be able to change the hbase.regionserver.port property to the following in the appConfig: "site.hbase-site.hbase.regionserver.port": "${HBASE_REGIONSERVER.ALLOCATED_PORT}{PER_CONTAINER}", You would also have to add componentExports to the HBASE_REGIONSERVER component in the metainfo.xml file: <component> <name>HBASE_REGIONSERVER</name> <componentExports> <componentExport> <name>regionservers</name> <value>${THIS_HOST}:${site.hbase-site.hbase.regionserver.port}</value> </componentExport> </componentExports> ... You should then be able to access this information through /ws/v1/slider/publisher/slider/componentinstancedata ... View more

As described in the answer to this question: https://community.hortonworks.com/questions/35138/target-replicas-is-5-but-found-3-live-replicas.html Start the accumulo shell on a host where the Accumulo client is installed and run the following: config -t accumulo.root -s table.file.replication=3 config -t accumulo.metadata -s table.file.replication=3 You'll have to change these properties AND run the hdfs setrep command so that both new and existing files have their settings changed. ... View more

Accumulo sets the replication for its metadata tables to 5 by default; the hdfs setrep command will change the existing files, but Accumulo will still be using 5 for new files it creates. To change this setting, start the accumulo shell and run the following: config -t accumulo.root -s table.file.replication=3 config -t accumulo.metadata -s table.file.replication=3 (Note that older versions of Accumulo have just one metadata table named !METADATA instead of the two tables listed above.) You'll have to change these properties AND run the hdfs setrep command so that both new and existing files have their settings changed. You could set the table.file.replication to 3 directly as in the commands above, or you could set it to 0 if you want Accumulo to use the HDFS default replication value. To see what value Accumulo has for the table.file.replication property and verify that you have set it properly, you can run: config -t accumulo.root -f table.file.replication config -t accumulo.metadata -f table.file.replication ... View more

I think you are correct that it is just seeing if the PID still exists. It should be related to this code in the app package regionserver script: https://github.com/apache/incubator-slider/blob/develop/app-packages/hbase/package/scripts/hbase_regionserver.py#L55 The actual heartbeat is done in the agent Controller: https://github.com/apache/incubator-slider/blob/develop/slider-agent/src/main/python/agent/Controller.py#L264 Also, you can specify the heartbeat.monitor.interval in the appConfig.json (in milliseconds): { "schema": "http://example.org/specification/v2.0.0", "metadata": { }, "global": { "heartbeat.monitor.interval": "60000", ... } } ... View more

The X-Requested-By HTTP header is required. Try this: curl -u admin:admin -X DELETE -H "X-Requested-By: ambari" http://lnxbig05:8080/api/v1/clusters/rsicluster01/services/ACCUMULO ... View more