elasticsearch-5.x JAVA API (002)

elasticsearch-5.x JAVA API Part II: Cluster Health and segment merging

1. Cluster health

First define a class to store cluster health information

Package Com.zw.elasticsearch.cluster;public class Clusterhealth {//Cluster name private String clustername;  Number of nodes in cluster private int number_of_node;  Active total number of pieces private int number_of_activeshards;      Number of active primary shards private int number_of_activeprimaryshards;//Initializes the number of shards private int number_of_initingshards; Number of unassigned shards private int number_of_unassignedshards;//number of shards in migration private int number_of_relocatingshards;//Cluster health value private String Clusterstate;public string Getclustername () {return clustername;} public void Setclustername (String clustername) {this.clustername = clustername;} public int Getnumber_of_node () {return number_of_node;} public void Setnumber_of_node (int number_of_node) {this.number_of_node = Number_of_node;} public int getnumber_of_activeshards () {return number_of_activeshards;} public void setnumber_of_activeshards (int number_of_activeshards) {this.number_of_activeshards = Number_of_ Activeshards;} public int getnumber_of_activeprimaryshards () {return number_of_activeprimaryshards;} public void Setnumber_of_activeprimaryshards (int number_of_activeprimaryshards) {this.number_of_activeprimaryshards = Number_of_ Activeprimaryshards;} public int getnumber_of_initingshards () {return number_of_initingshards;} public void setnumber_of_initingshards (int number_of_initingshards) {this.number_of_initingshards = Number_of_ Initingshards;} public int getnumber_of_unassignedshards () {return number_of_unassignedshards;} public void setnumber_of_unassignedshards (int number_of_unassignedshards) {this.number_of_unassignedshards = Number_ Of_unassignedshards;} public int getnumber_of_relocatingshards () {return number_of_relocatingshards;} public void setnumber_of_relocatingshards (int number_of_relocatingshards) {this.number_of_relocatingshards = Number_ Of_relocatingshards;} Public String Getclusterstate () {return clusterstate;} public void Setclusterstate (String clusterstate) {this.clusterstate = clusterstate;} Public Clusterhealth (String clustername, int number_of_node, int number_of_activeshards,int Number_of_activeprimaryshards, int number_of_initingshards, int number_of_unassignedshards,int number_of_relocatingshards, String clusterstate) {super (); this.clustername = Clustername;this.number_of_node = Number_of_node;this.number_of_ Activeshards = Number_of_activeshards;this.number_of_activeprimaryshards = Number_of_activeprimaryshards; This.number_of_initingshards = Number_of_initingshards;this.number_of_unassignedshards = Number_of_ Unassignedshards;this.number_of_relocatingshards = Number_of_relocatingshards;this.clusterstate = clusterState;} Public Clusterhealth () {super ();} @Overridepublic String toString () {return "Clusterhealth [clustername=" + ClusterName + ", number_of_node=" + number_of_no De+ ", number_of_activeshards=" + Number_of_activeshards + ", number_of_activeprimaryshards=" + number_of_ Activeprimaryshards + ", number_of_initingshards=" + number_of_initingshards+ ", number_of_unassignedshards=" + number_ Of_unassignedshards + ", number_of_relocatingshards=" + number_of_relocatingshards + ", clusterstate=" + Clusterstate + "]";}} 

Here's the code to get the cluster health information:

2. Mandatory segment Merging

First define a class to hold index state information (including index name, number of valid documents, number of documents deleted, number of segments, etc.)

Package Com.zw.elasticsearch.cluster;public class Indexstateinfo {//number of valid documents private long documentcounts;// Mark the number of deleted documents private long deletingdoccounts;//segment number private long segmentcounts;//index name private String indexname;public Long Getdocumentcounts () {return documentcounts;} public void setdocumentcounts (long documentcounts) {this.documentcounts = documentcounts;} Public long getdeletingdoccounts () {return deletingdoccounts;} public void setdeletingdoccounts (long deletingdoccounts) {this.deletingdoccounts = deletingdoccounts;} Public long getsegmentcounts () {return segmentcounts;} public void setsegmentcounts (long segmentcounts) {this.segmentcounts = segmentcounts;} Public String Getindexname () {return indexname;} public void Setindexname (String indexname) {this.indexname = IndexName;} Public Indexstateinfo (Long documentcounts, long deletingdoccounts, long segmentcounts, String IndexName) {super (); this.documentcounts = documentcounts;this.deletingdoccounts = Deletingdoccounts;this.segmentcounts = SegmeNtcounts;this.indexname = IndexName;} Public Indexstateinfo () {super ();} @Overridepublic String toString () {return "Indexstateinfo [documentcounts=" + documentcounts + ", deletingdoccounts=" + de Letingdoccounts+ ", segmentcounts=" + segmentcounts + ", indexname=" + IndexName + "]";}}

Here's how to get the index status information and force the segment merge code

Get index information:

Forced segment Merging: (where the parameter segmentnum is the number of segments eventually merged into)

elasticsearch-5.x JAVA API (002)