java doc error modify (#2004)

* 1, master persistent task
2. extract  master and worker communication model

* 1, master persistent task
2. extract  master and worker communication model

* 1, master persistent task
2. extract  master and worker communication model

* add license

* modify javadoc error

* TaskExecutionContext create modify

* buildAckCommand taskInstanceId not set modify

* java doc error modify

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/BaseDataSource.java

@@ -57,6 +57,7 @@ public abstract class BaseDataSource {
   public void setPrincipal(String principal) {
     this.principal = principal;
   }
+
   /**
    * test whether the data source can be connected successfully
    * @throws Exception

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/DB2ServerDataSource.java

@@ -33,7 +33,7 @@ public class DB2ServerDataSource extends BaseDataSource {
 
     /**
      * gets the JDBC url for the data source connection
-     * @return
+     * @return jdbc url
      */
     @Override
     public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/HiveDataSource.java

@@ -34,7 +34,7 @@ public class HiveDataSource extends BaseDataSource {
 
   /**
    * gets the JDBC url for the data source connection
-   * @return
+   * @return jdbc url
    */
   @Override
   public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/MySQLDataSource.java

@@ -34,7 +34,7 @@ public class MySQLDataSource extends BaseDataSource {
 
   /**
    * gets the JDBC url for the data source connection
-   * @return
+   * @return jdbc url
    */
   @Override
   public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/OracleDataSource.java

@@ -33,7 +33,7 @@ public class OracleDataSource extends BaseDataSource {
 
     /**
      * gets the JDBC url for the data source connection
-     * @return
+     * @return jdbc url
      */
     @Override
     public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/PostgreDataSource.java

@@ -35,7 +35,7 @@ public class PostgreDataSource extends BaseDataSource {
 
   /**
    * gets the JDBC url for the data source connection
-   * @return
+   * @return jdbc url
    */
   @Override
   public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/SQLServerDataSource.java

@@ -33,7 +33,7 @@ public class SQLServerDataSource extends BaseDataSource {
 
     /**
      * gets the JDBC url for the data source connection
-     * @return
+     * @return jdbc url
      */
     @Override
     public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/datasource/SparkDataSource.java

@@ -34,7 +34,7 @@ public class SparkDataSource extends BaseDataSource {
 
   /**
    * gets the JDBC url for the data source connection
-   * @return
+   * @return jdbc url
    */
   @Override
   public String getJdbcUrl() {

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/entity/TaskInstance.java

@@ -155,20 +155,17 @@ public class TaskInstance implements Serializable {
 
     /**
      * duration
-     * @return
      */
     @TableField(exist = false)
     private Long duration;
 
     /**
      * max retry times
-     * @return
      */
     private int maxRetryTimes;
 
     /**
      * task retry interval, unit: minute
-     * @return
      */
     private int retryInterval;
 
@@ -185,7 +182,6 @@ public class TaskInstance implements Serializable {
 
     /**
      * dependent state
-     * @return
      */
     @TableField(exist = false)
     private String dependentResult;
@@ -193,7 +189,6 @@ public class TaskInstance implements Serializable {
 
     /**
      * worker group id
-     * @return
      */
     private int workerGroupId;
 

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/ResourceMapper.java

@@ -87,7 +87,8 @@ public interface ResourceMapper extends BaseMapper<Resource> {
     /**
      * list authorized resource
      * @param userId userId
-     * @param resNames resource names
+     * @param resNames resNames
+     * @param <T> T
      * @return resource list
      */
     <T> List<Resource> listAuthorizedResource(@Param("userId") int userId,@Param("resNames")T[] resNames);

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/ScheduleMapper.java

@@ -62,8 +62,8 @@ public interface ScheduleMapper extends BaseMapper<Schedule> {
 
     /**
      * query schedule list by process definition id
-     * @param processDefinitionId
+     * @param processDefinitionId processDefinitionId
-     * @return
+     * @return schedule list
      */
     List<Schedule> queryReleaseSchedulerListByProcessDefinitionId(@Param("processDefinitionId") int processDefinitionId);
 

dolphinscheduler-dao/src/main/java/org/apache/dolphinscheduler/dao/mapper/UdfFuncMapper.java

@@ -81,8 +81,9 @@ public interface UdfFuncMapper extends BaseMapper<UdfFunc> {
     /**
      * list authorized UDF function
      * @param userId userId
-     * @param udfIds UDF function id array
+     * @param udfIds udfIds
-     * @return UDF function list
+     * @param <T> T
+     * @return Udf function list
      */
     <T> List<UdfFunc> listAuthorizedUdfFunc (@Param("userId") int userId,@Param("udfIds")T[] udfIds);