title: InfluxDb high high cardinality data
body: <p>I'm inserting data into the influxDb using batch points via Java API (used http API under the hood) after some time the exception is raised. </p>
  
  <pre><code>java.lang.RuntimeException: {"error":"partial write: max-values-per-tag limit exceeded (100010/100000):
  </code></pre>
  
  <p>According to the Influx docs - <a href="https://www.influxdata.com/influxdb-1-1-released-with-up-to-60-performance-increase-and-new-query-functionality/" rel="nofollow noreferrer">docs</a> this parameter prevent high cardinality data from being written before it can be fixed into the Influx.</p>
  
  <p>I can set it to 0 to remove Exception. But I don't clear understand what is "high cardinality data". What's wrong to have "high cardinality data" to be inserted into InfluxDb. I'm going to insert millions unique values and need them to be indexed. Do I need to review my data design ?</p>