org.apache.sysds.utils

## Class Explain

- java.lang.Object
- - org.apache.sysds.utils.Explain

-     public class Explain
      extends Object

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `Explain.ExplainCounts`
    `static class` | `Explain.ExplainType`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `Explain()`

  - ### Method Summary

    All Methods Static Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static Explain.ExplainCounts` | `countDistributedOperations(Program rtprog)` Counts the number of compiled MRJob/Spark instructions in the given runtime program.
    `static String` | `display(DMLProgram prog, Program rtprog, Explain.ExplainType type, Explain.ExplainCounts counts)`
    `static String` | `explain(ArrayList<Instruction> inst)`
    `static String` | `explain(ArrayList<Instruction> inst, int level)`
    `static String` | `explain(CNode node)`
    `static String` | `explain(CNode node, int level)`
    `static String` | `explain(DMLProgram prog)`
    `static String` | `explain(DMLProgram prog, Program rtprog, Explain.ExplainType type)`
    `static String` | `explain(DMLProgram prog, Program rtprog, Explain.ExplainType type, Explain.ExplainCounts counts)`
    `static String` | `explain(Hop hop)`
    `static String` | `explain(Hop hop, int level)`
    `static String` | `explain(Instruction inst)`
    `static String` | `explain(LineageItem li)`
    `static String` | `explain(Program rtprog)`
    `static String` | `explain(ProgramBlock pb)`
    `static String` | `explain(Program rtprog, Explain.ExplainCounts counts)`
    `static String` | `explain(StatementBlock sb)`
    `static String` | `explainCPlan(CNodeTpl cplan)`
    `static String` | `explainDegreeOfParallelism()`
    `static String` | `explainDegreeOfParallelism(Explain.ExplainCounts counts)`
    `static String` | `explainHops(ArrayList<Hop> hops)`
    `static String` | `explainHops(ArrayList<Hop> hops, int level)`
    `static String` | `explainLineageItems(LineageItem[] lis)`
    `static String` | `explainLineageItems(LineageItem[] lis, int level)`
    `static String` | `explainMemoryBudget()`
    `static String` | `explainMemoryBudget(Explain.ExplainCounts counts)`
    `static String` | `getIdentation(int level)`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### Explain

          public Explain()

  - ### Method Detail

    - #### display

          public static String display(DMLProgram prog,
                                       Program rtprog,
                                       Explain.ExplainType type,
                                       Explain.ExplainCounts counts)

    - #### explainMemoryBudget

          public static String explainMemoryBudget()

    - #### explainMemoryBudget

          public static String explainMemoryBudget(Explain.ExplainCounts counts)

    - #### explainDegreeOfParallelism

          public static String explainDegreeOfParallelism()

    - #### explainDegreeOfParallelism

          public static String explainDegreeOfParallelism(Explain.ExplainCounts counts)

    - #### explain

          public static String explain(DMLProgram prog,
                                       Program rtprog,
                                       Explain.ExplainType type)

    - #### explain

          public static String explain(DMLProgram prog,
                                       Program rtprog,
                                       Explain.ExplainType type,
                                       Explain.ExplainCounts counts)

    - #### explain

          public static String explain(DMLProgram prog)

    - #### explain

          public static String explain(Program rtprog)

    - #### explain

          public static String explain(Program rtprog,
                                       Explain.ExplainCounts counts)

    - #### explain

          public static String explain(ProgramBlock pb)

    - #### explain

          public static String explain(ArrayList<Instruction> inst)

    - #### explain

          public static String explain(ArrayList<Instruction> inst,
                                       int level)

    - #### explain

          public static String explain(Instruction inst)

    - #### explain

          public static String explain(StatementBlock sb)

    - #### explainHops

          public static String explainHops(ArrayList<Hop> hops)

    - #### explainHops

          public static String explainHops(ArrayList<Hop> hops,
                                           int level)

    - #### explain

          public static String explain(Hop hop)

    - #### explain

          public static String explain(Hop hop,
                                       int level)

    - #### explainLineageItems

          public static String explainLineageItems(LineageItem[] lis)

    - #### explainLineageItems

          public static String explainLineageItems(LineageItem[] lis,
                                                   int level)

    - #### explain

          public static String explain(LineageItem li)

    - #### explainCPlan

          public static String explainCPlan(CNodeTpl cplan)

    - #### explain

          public static String explain(CNode node)

    - #### explain

          public static String explain(CNode node,
                                       int level)

    - #### countDistributedOperations

          public static Explain.ExplainCounts countDistributedOperations(Program rtprog)

      Counts the number of compiled MRJob/Spark instructions in the given runtime program.
      Parameters:
        `rtprog` - runtime program
      Returns:
        counts

    - #### getIdentation

          public static String getIdentation(int level)

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