[jira] [Created] (AMBARI-25611) After purging AMS database "TimelineMetricMetadataKey is null" error is thrown

["Tamas Payer (Jira)" <ji...@apache.org>]

Tamas Payer created AMBARI-25611:
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             Summary: After purging AMS database "TimelineMetricMetadataKey is null" error is thrown
                 Key: AMBARI-25611
                 URL: https://issues.apache.org/jira/browse/AMBARI-25611
             Project: Ambari
          Issue Type: Task
          Components: ambari-metrics
    Affects Versions: 2.7.5
            Reporter: Tamas Payer


After purging the Metrics Collector's database the following error message appears in the logs:
{code:java}
2021-01-15 11:30:48,921 ERROR org.apache.ambari.metrics.core.timeline.discovery.TimelineMetricMetadataManager: TimelineMetricMetadataKey is null for : [-1, -1, -64, -112, -85, -17, 39, -84, -121, 19, -118, -36, -104, -21, -7, 110, 61, -97, -56, 10]{code}
 

*The following steps were used to purge the database:*
 * +Get some configuration values:+
 * Get _hbase.rootdir_. *hbase.rootdir = /user/ams/hbase*
 * Get _hbase.tmp.dir_. *hbase.tmp.dir = /var/lib/ambari-metrics-collector/hbase-tmp*
 * Get _hbase.zookeeper.property.datadir_. *hbase.zookeeper.property.datadir = ${hbase.tmp.dir}/zookeeper*
 * Get _phoenix.spool.directory_. *phoenix.spool.directory = ${hbase.tmp.dir}/phoenix-spool*
 * Get ‘ZooKeeper Znode Parent’. *ZooKeeper Znode Parent = /ams-hbase-unsecure*
 * *Stop AMS and set it to Maintenance Mode*
 * Remove the HBase database
 * _su hdfs_
 * _hdfs dfs -ls /user/ams/hbase_
 * _hdfs dfs -rm -r /user/ams/hbase_
 * _exit (back to root from hdfs user)_
 * Remove the AMS Zookeeper data *on both Collector Nodes*
 * _su ams_
 * _ls /var/lib/ambari-metrics-collector/hbase-tmp/zookeeper/_
 * _rm -rf /var/lib/ambari-metrics-collector/hbase-tmp/zookeeper/*_
 * Remove any Phoenix spool files *on both Collector Nodes*
 * _ls /var/lib/ambari-metrics-collector/hbase-tmp/phoenix-spool/_
 * _rm -rf /var/lib/ambari-metrics-collector/hbase-tmp/phoenix-spool/*_
 * _exit_ (back to root from ams user)
 * Connect to the cluster zookeeper instance and delete the ‘_ZooKeeper Znode Parent’/meta-region-server_ node
 * _/usr/hdp/current/zookeeper-client/bin/zkCli.sh -server localhost:2181_
 * _[zk: localhost:2181(CONNECTED) 0]_
 * _rmr /ams-hbase-unsecure/meta-region-server_
 * _quit_
 * Restart AMS

 



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