Monitoring Solr segments

Monitor Solr segments.

To monitor Solr segments, use the Segments Info screen in the Solr Administration User Interface application. You can also use this API endpoint and specify the Solr collection path name:

solr/<Solr collection path name>/admin/segments

The following example obtains the segment information for the Solr GeoNames collection. The example specifies the IP address and port, and specifies that the output is to be returned in JSON format and indented.

http://127.0.0.1:8983/solr/solr.geonames/admin/segments?wt=json&indent=true

The following output shows the segment information, which is truncated for brevity:

{
  "responseHeader":{
    "status":0,
    "QTime":3},
  "segments":{
    "_0":{
      "name":"_0",
      "delCount":5256,
      "sizeInBytes":1843747,
      "size":6439,
      "sizeMB":1.7583341598510742,
      "delRatio":0.816275819226588,
      "age":"2017-06-15T15:21:09.730Z",
      "source":"flush"},
    "_1":{
      "name":"_1",
      "delCount":5351,
      "sizeInBytes":1881895,
      "size":6554,
      "sizeMB":1.7947149276733398,
      "delRatio":0.816447970704913,
      "age":"2017-06-15T15:21:09.786Z",
      "source":"flush"},
    "_3":{
      "name":"_3",
      "delCount":5553,
      "sizeInBytes":1952348,
      "size":6850,
      "sizeMB":1.8619041442871094,
      "delRatio":0.8106569343065694,
      "age":"2017-06-15T15:21:09.790Z",
      "source":"flush"},
  ...
}

The following table describes the segment properties in the previous output:

name

delCount

sizeInBytes

size

sizeMB

delRatio

age

source

For more information, see the Apache Solr online reference guide located at https://lucene.apache.org/solr/guide.