Examples of org.apache.pig.PigException

org.apache.pig.PigException
All exceptions in Pig are encapsulated in the PigException class. Details such as the source of the error, error message, error code, etc. are contained in this class. The default values for the attributes are: errorSource = BUG errorCode = 0 retriable = false detailedMessage = null

        pigServer.registerQuery("A = LOAD '" + inputFile + "';");
        pigServer.registerQuery("B = FOREACH A generate $0, " + UDF1.class.getName() + "($1,$1);");
        try{
            pigServer.openIterator("B");
        }catch (Exception e) {
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertEquals(true,msg.contains("Multiple matching functions"));
        }
        
    }

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            if (pe != null) {
                log.error("You don't have permission to perform the operation. Error from the server: " + pe.getMessage());
            }
        }


        PigException pigException = LogUtils.getPigException(t);


        if(pigException != null) {
            message = "ERROR " + pigException.getErrorCode() + ": " + pigException.getMessage();
        } else {
            if((t instanceof ParseException 
                    || t instanceof org.apache.pig.tools.pigscript.parser.TokenMgrError 
                    || t instanceof org.apache.pig.impl.logicalLayer.parser.TokenMgrError)) {
                message = "ERROR 1000: Error during parsing. " + t.getMessage();

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        pigServer.registerQuery("c = foreach b generate flatten(group) as c0;");
        
        try {
            pigServer.openIterator("c");
        } catch (Exception e) {
            PigException pe = LogUtils.getPigException(e);
            assertTrue(pe.getErrorCode()==1117);
            assertTrue(pe.getMessage().contains("Cannot merge"));
            return;
        }
        fail();
    }

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      return new Pair<String, String>(dbTableNametokens[0], dbTableNametokens[1]);
    }else{
      String locationErrMsg = "The input location in load statement " +
      "should be of the form " +
      "<databasename>.<table name> or <table name>. Got " + location;
      throw new PigException(locationErrMsg, PIG_EXCEPTION_CODE);
    }
  }

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    Table table = null;
    try {
      client = createHiveMetaClient(hcatServerUri, hcatServerPrincipal, PigHCatUtil.class);
      table = client.getTable(dbName, tableName);
    } catch (NoSuchObjectException nsoe){
      throw new PigException("Table not found : " + nsoe.getMessage(), PIG_EXCEPTION_CODE); // prettier error messages to frontend
    } catch (Exception e) {
      throw new IOException(e);
    }
    hcatTableCache.put(loc_server, table);
    return table;

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    }


    if (type == Type.BOOLEAN){
      errMsg = "HCatalog column type 'BOOLEAN' is not supported in " +
      "Pig as a column type";
      throw new PigException(errMsg, PIG_EXCEPTION_CODE);
    }


    errMsg = "HCatalog column type '"+ type.toString() +"' is not supported in Pig as a column type";
    throw new PigException(errMsg, PIG_EXCEPTION_CODE);
  }

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      }
  }


  private static void validateIsPigCompatibleMapWithPrimitives(HCatFieldSchema hfs) throws IOException{
      if (hfs.getMapKeyType() != Type.STRING){
          throw new PigException("Incompatible type in schema, found map with " +
                  "non-string key type in :"+hfs.getTypeString(), PIG_EXCEPTION_CODE);
      }
      validateIsPigCompatiblePrimitive(hfs.getMapValueSchema().getFields().get(0));
  }

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      if (
              (hfs.isComplex()) ||
              (htype == Type.TINYINT) ||
              (htype == Type.SMALLINT)
              ){
            throw new PigException("Incompatible type in schema, expected pig " +
                      "compatible primitive for:" + hfs.getTypeString());
          }


  }

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      try{
        HCatOutputFormat.setOutput(job, tblInfo);
      } catch(HCatException he) {
          // pass the message to the user - essentially something about the table
          // information passed to HCatOutputFormat was not right
          throw new PigException(he.getMessage(), PigHCatUtil.PIG_EXCEPTION_CODE, he);
      }
      HCatSchema hcatTblSchema = HCatOutputFormat.getTableSchema(job);
      try{
        doSchemaValidations(pigSchema, hcatTblSchema);
      } catch(HCatException he){

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            PigHCatUtil.getHCatServerPrincipal(job));
    HCatSchema hcatTableSchema = HCatUtil.getTableSchemaWithPtnCols(table);
    try {
      PigHCatUtil.validateHCatTableSchemaFollowsPigRules(hcatTableSchema);
    } catch (IOException e){
      throw new PigException(
          "Table schema incompatible for reading through HCatLoader :" + e.getMessage()
          + ";[Table schema was "+ hcatTableSchema.toString() +"]"
          ,PigHCatUtil.PIG_EXCEPTION_CODE, e);
    }
    storeInUDFContext(signature, HCatConstants.HCAT_TABLE_SCHEMA, hcatTableSchema);

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