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


    if (type == Type.BOOLEAN && pigHasBooleanSupport) {
      return DataType.BOOLEAN;
    }


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

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    try {
      Type hType = hcatField.getType();
      switch (hType) {
      case BOOLEAN:
        if (!pigHasBooleanSupport) {
          throw new PigException("Incompatible type found in HCat table schema: "
              + hcatField, PigHCatUtil.PIG_EXCEPTION_CODE);
        }
        break;
      case ARRAY:
        validateHCatSchemaFollowsPigRules(hcatField.getArrayElementSchema());
        break;
      case STRUCT:
        validateHCatSchemaFollowsPigRules(hcatField.getStructSubSchema());
        break;
      case MAP:
        // key is only string
        if (hcatField.getMapKeyType() != Type.STRING) {
          LOG.info("Converting non-String key of map " + hcatField.getName() + " from "
            + hcatField.getMapKeyType() + " to String.");
        }
        validateHCatSchemaFollowsPigRules(hcatField.getMapValueSchema());
        break;
      }
    } catch (HCatException e) {
      throw new PigException("Incompatible type found in hcat table schema: " + hcatField, PigHCatUtil.PIG_EXCEPTION_CODE, e);
    }
  }

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            lp = (LogicalPlan) compileLp.invoke(myPig, new Object[] { null });


            Assert.assertNotNull(lp);


        } catch (Exception e) {
            PigException pe = LogUtils.getPigException(e);
            if (pe != null) {
                throw pe;
            } else {
                e.printStackTrace();
                Assert.fail();

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            mrp = (MROperPlan) compile.invoke(launcher, new Object[] { pp, myPig.getPigContext() });


            Assert.assertNotNull(mrp);


        } catch (Exception e) {
            PigException pe = LogUtils.getPigException(e);
            if (pe != null) {
                throw pe;
            } else {
                e.printStackTrace();
                Assert.fail();

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        pigServer.registerQuery("B = FOREACH A generate x, " + UDF3.class.getName() + "(x,y);");
        try {
            Iterator<Tuple> iter = pigServer.openIterator("B");
        } catch(Exception e) {
            exceptionCaused = true;
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertTrue(msg.contains("Multiple matching functions"));
            assertTrue(msg.contains("{float,double}, {float,long}"));
        }
        assertTrue(exceptionCaused);
    }

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        pigServer.registerQuery("B = FOREACH A generate x, " + UDF3.class.getName() + "(x,y, y);");
        try {
            Iterator<Tuple> iter = pigServer.openIterator("B");
        }catch(Exception e) {
            exceptionCaused = true;
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertTrue(msg.contains("Multiple matching functions"));
            assertTrue(msg.contains("({float,double,long}, {float,long,double})"));
        }
        assertTrue(exceptionCaused);
    }

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        pigServer.registerQuery("B = FOREACH A generate x, " + UDF3.class.getName() + "(x,y, y);");
        try {
            Iterator<Tuple> iter = pigServer.openIterator("B");
        }catch(Exception e) {
            exceptionCaused = true;
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertTrue(msg.contains("Multiple matching functions"));
            assertTrue(msg.contains("({float,double,long}, {float,long,double})"));
        }
        assertTrue(exceptionCaused);
    }

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        pigServer.registerQuery("B = FOREACH A generate x, " + UDF3.class.getName() + "(x,y, y);");
        try {
            Iterator<Tuple> iter = pigServer.openIterator("B");
        }catch(Exception e) {
            exceptionCaused = true;
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertTrue(msg.contains("Could not infer the matching function"));
        }
        assertTrue(exceptionCaused);
    }

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        pigServer.registerQuery("B = FOREACH A generate x, " + UDF3.class.getName() + "(x,y, y);");
        try {
            Iterator<Tuple> iter = pigServer.openIterator("B");
        }catch(Exception e) {
            exceptionCaused = true;
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertTrue(msg.contains("Multiple matching functions"));
            assertTrue(msg.contains("({float,double,long}, {float,long,double}"));
        }
        assertTrue(exceptionCaused);
    }

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        pigServer.registerQuery("A = LOAD '" + inputFile + "' as (x:long, y:int);");
        pigServer.registerQuery("B = FOREACH A generate x, " + UDF1.class.getName() + "(y,y);");
        try{
            pigServer.openIterator("B");
        }catch (Exception e) {
            PigException pe = LogUtils.getPigException(e);
            String msg = (pe == null? e.getMessage(): pe.getMessage());
            assertEquals(true,msg.contains("as multiple or none of them fit"));
        }
        
    }

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