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

        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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            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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            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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                HCatOutputFormat.setOutput(job, outputJobInfo);
            } 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);

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            "d = foreach c generate i,j,l,a::i,a::j,b::i,b::l;";
            boolean exceptionThrown = false;
            try{
                Util.registerMultiLineQuery(pigServer, script);
            }catch (Exception e) {
                PigException pe = LogUtils.getPigException(e);
                assertEquals(1025, pe.getErrorCode());
                exceptionThrown = true;
            }
            assertEquals(true, exceptionThrown);
            
            // schema with duplicates with resolution

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                        script +=  "c = join a by $0 left, b by $0;" ;
                    }
                    try {
                        Util.registerMultiLineQuery(pigServer, script);
                    } catch (Exception e) {
                        PigException pe = LogUtils.getPigException(e);
                        assertEquals(1105, pe.getErrorCode());
                    }
                }
            }
            deleteInputFile(execType, firstInput);
            deleteInputFile(execType, secondInput);

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                        script +=  "c = join a by $0 right, b by $0;" ;
                    }
                    try {
                        Util.registerMultiLineQuery(pigServer, script);
                    } catch (Exception e) {
                        PigException pe = LogUtils.getPigException(e);
                        assertEquals(1105, pe.getErrorCode());
                    }
                }
            }
            deleteInputFile(execType, firstInput);
            deleteInputFile(execType, secondInput);

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                        script +=  "c = join a by $0 full, b by $0;" ;
                    }
                    try {
                        Util.registerMultiLineQuery(pigServer, script);
                    } catch (Exception e) {
                        PigException pe = LogUtils.getPigException(e);
                        assertEquals(1105, pe.getErrorCode());
                    }
                }
            }
            deleteInputFile(execType, firstInput);
            deleteInputFile(execType, secondInput);

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        pigServer.registerQuery("B = LOAD '" + INPUT_FILE + "' as (id, name);");
        pigServer.registerQuery("C = LOAD '" + INPUT_FILE + "' as (id, name);");
        try {
            pigServer.registerQuery("D = join A by id, B by id, C by id using \"merge\";");
        }catch(Exception e) {
            PigException pe = LogUtils.getPigException(e);
            Assert.assertEquals(1000,pe.getErrorCode());
            return;
        }
        Assert.fail("Should throw exception, do not support 3 way join");
    }

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        pigServer.registerQuery("C = ORDER A by $0 parallel 5;");
        pigServer.registerQuery("D = join A by id, C by id using \"merge\";");
        try {
            pigServer.openIterator("D");
        }catch(Exception e) {
            PigException pe = LogUtils.getPigException(e);
            Assert.assertEquals(1103,pe.getErrorCode());
            return;
        }
        Assert.fail("Should fail to compile");
    }

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