Hbase property update through Ambari API

Roy — Tue, 13 Sep 2016 20:42:49 GMT

I am trying to update Hbase properties through Ambari API and was following this document.

Here are the steps I followed :

Dumped the existing config into newconfig.json

curl -u "admin:admin" -G "https://myhbase.net/api/v1/clusters/myhbase/configurations?type=hbase-site&tag=TOPOLOGY_RESOLVED" | jq --arg newtag $(echo version$(date +%s%N)) '.items[] | del(.href, .version, .Config) | .tag |= $newtag | {"Clusters": {"desired_config": .}}' > newconfig.json

Then Modified the property from `0.4` to `0.6` in newconfig.json, also version number

"hbase.regionserver.global.memstore.size": "0.6",

Then apply the modified config

cat newconfig.json | curl -u "admin:admin" -H "X-Requested-By: ambari" -X PUT -d "@-" "https://myhbase.net/api/v1/clusters/myhbase"

Then restarted the HBase
Stop

echo '{"RequestInfo": {"context" :"Stopping the Hbase service"}, "Body": {"ServiceInfo": {"state": "INSTALLED"}}}' | curl -u "admin:admin" -H "X-Requested-By: ambari" -X PUT -d "@-" "https://myhbase.net/api/v1/clusters/myhbase/services/HBASE"

Start

echo '{"RequestInfo": {"context" :"Restarting the Hbase service"}, "Body": {"ServiceInfo": {"state": "STARTED"}}}' | curl -u "admin:admin" -H "X-Requested-By: ambari" -X PUT -d "@-" "https://myhbase.net/api/v1/clusters/myhbase/services/HBASE"

But after restart Hbase master & region server went down & stuck into restart mode, where they were getting restarted.

Anyone know what wrong I ma doing here ? is there any better way to do this through Ambari API ?

Re: Hbase property update through Ambari API

Former Member — Tue, 13 Sep 2016 22:22:46 GMT

@roy p

What error do you see in the "/var/log/hbase/hbase-hbase-master-host.example.com.log" log file while trying to restart HMaster ?

Remember that the combined value cannot exceed 0.8. Please check the settings for hbase.regionserver.global.memstore.size and hfile.block.cache.size in your configuration. hbase.regionserver.global.memstore.size is 0.6 hfile.block.cache.size is 0.4

Also what is the value for "hfile.block.cache.size" at your end?

Re: Hbase property update through Ambari API

Roy — Thu, 15 Sep 2016 03:46:20 GMT

After correcting values for

hbase.regionserver.global.memstore.size and hfile.block.cache.size

everything looks good.

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Hbase property update through Ambari API

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