hdfs html5,HDFS :: Apache Camel

connectOnStartup (common) Whether to connect to the HDFS file system on starting the producer/consumer. If false then the connection is created on-demand. Notice that HDFS may take up till 15 minutes to establish a connection, as it has hardcoded 45 x 20 sec redelivery. By setting this option to false allows your application to startup, and not block for up till 15 minutes. true boolean

fileSystemType (common) Set to LOCAL to not use HDFS but local java.io.File instead. There are 2 enums and the value can be one of: LOCAL, HDFS HDFS HdfsFileSystemType

fileType (common) The file type to use. For more details see Hadoop HDFS documentation about the various files types. There are 5 enums and the value can be one of: NORMAL_FILE, SEQUENCE_FILE, MAP_FILE, BLOOMMAP_FILE, ARRAY_FILE NORMAL_FILE HdfsFileType

keyType (common) The type for the key in case of sequence or map files. There are 9 enums and the value can be one of: NULL, BOOLEAN, BYTE, INT, FLOAT, LONG, DOUBLE, TEXT, BYTES NULL WritableType

namedNodes (common) A comma separated list of named nodes (e.g. srv11.example.com:8020,srv12.example.com:8020) String

owner (common) The file owner must match this owner for the consumer to pickup the file. Otherwise the file is skipped. String

valueType (common) The type for the key in case of sequence or map files. There are 9 enums and the value can be one of: NULL, BOOLEAN, BYTE, INT, FLOAT, LONG, DOUBLE, TEXT, BYTES BYTES WritableType

bridgeErrorHandler (consumer) Allows for bridging the consumer to the Camel routing Error Handler, which mean any exceptions occurred while the consumer is trying to pickup incoming messages, or the likes, will now be processed as a message and handled by the routing Error Handler. By default the consumer will use the org.apache.camel.spi.ExceptionHandler to deal with exceptions, that will be logged at WARN or ERROR level and ignored. false boolean

pattern (consumer) The pattern used for scanning the directory * String

sendEmptyMessageWhenIdle (consumer) If the polling consumer did not poll any files, you can enable this option to send an empty message (no body) instead. false boolean

streamDownload (consumer) Sets the download method to use when not using a local working directory. If set to true, the remote files are streamed to the route as they are read. When set to false, the remote files are loaded into memory before being sent into the route. false boolean

exceptionHandler (consumer) To let the consumer use a custom ExceptionHandler. Notice if the option bridgeErrorHandler is enabled then this option is not in use. By default the consumer will deal with exceptions, that will be logged at WARN or ERROR level and ignored. ExceptionHandler

exchangePattern (consumer) Sets the exchange pattern when the consumer creates an exchange. There are 3 enums and the value can be one of: InOnly, InOut, InOptionalOut ExchangePattern

pollStrategy (consumer) A pluggable org.apache.camel.PollingConsumerPollingStrategy allowing you to provide your custom implementation to control error handling usually occurred during the poll operation before an Exchange have been created and being routed in Camel. PollingConsumerPollStrategy

append (producer) Append to existing file. Notice that not all HDFS file systems support the append option. false boolean

lazyStartProducer (producer) Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel’s routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. false boolean

overwrite (producer) Whether to overwrite existing files with the same name true boolean

blockSize (advanced) The size of the HDFS blocks 67108864 long

bufferSize (advanced) The buffer size used by HDFS 4096 int

checkIdleInterval (advanced) How often (time in millis) in to run the idle checker background task. This option is only in use if the splitter strategy is IDLE. 500 int

chunkSize (advanced) When reading a normal file, this is split into chunks producing a message per chunk. 4096 int

compressionCodec (advanced) The compression codec to use. There are 3 enums and the value can be one of: DEFAULT, GZIP, BZIP2 DEFAULT HdfsCompressionCodec

compressionType (advanced) The compression type to use (is default not in use). There are 3 enums and the value can be one of: NONE, RECORD, BLOCK NONE CompressionType

openedSuffix (advanced) When a file is opened for reading/writing the file is renamed with this suffix to avoid to read it during the writing phase. opened String

readSuffix (advanced) Once the file has been read is renamed with this suffix to avoid to read it again. read String

replication (advanced) The HDFS replication factor 3 short

splitStrategy (advanced) In the current version of Hadoop opening a file in append mode is disabled since it’s not very reliable. So, for the moment, it’s only possible to create new files. The Camel HDFS endpoint tries to solve this problem in this way: If the split strategy option has been defined, the hdfs path will be used as a directory and files will be created using the configured UuidGenerator. Every time a splitting condition is met, a new file is created. The splitStrategy option is defined as a string with the following syntax: splitStrategy=ST:value,ST:value,…​ where ST can be: BYTES a new file is created, and the old is closed when the number of written bytes is more than value MESSAGES a new file is created, and the old is closed when the number of written messages is more than value IDLE a new file is created, and the old is closed when no writing happened in the last value milliseconds String

maxMessagesPerPoll (filter) To define a maximum messages to gather per poll. By default a limit of 100 is set. Can be used to set a limit of e.g. 1000 to avoid when starting up the server that there are thousands of files. Values can only be greater than 0. Notice: If this option is in use then the limit will be applied on the valid files. For example if you have 100000 files and use maxMessagesPerPoll=500, then only the first 500 files will be picked up. 100 int

backoffErrorThreshold (scheduler) The number of subsequent error polls (failed due some error) that should happen before the backoffMultipler should kick-in. int

backoffIdleThreshold (scheduler) The number of subsequent idle polls that should happen before the backoffMultipler should kick-in. int

backoffMultiplier (scheduler) To let the scheduled polling consumer backoff if there has been a number of subsequent idles/errors in a row. The multiplier is then the number of polls that will be skipped before the next actual attempt is happening again. When this option is in use then backoffIdleThreshold and/or backoffErrorThreshold must also be configured. int

delay (scheduler) Milliseconds before the next poll. 500 long

greedy (scheduler) If greedy is enabled, then the ScheduledPollConsumer will run immediately again, if the previous run polled 1 or more messages. false boolean

initialDelay (scheduler) Milliseconds before the first poll starts. 1000 long

repeatCount (scheduler) Specifies a maximum limit of number of fires. So if you set it to 1, the scheduler will only fire once. If you set it to 5, it will only fire five times. A value of zero or negative means fire forever. 0 long

runLoggingLevel (scheduler) The consumer logs a start/complete log line when it polls. This option allows you to configure the logging level for that. There are 6 enums and the value can be one of: TRACE, DEBUG, INFO, WARN, ERROR, OFF TRACE LoggingLevel

scheduledExecutorService (scheduler) Allows for configuring a custom/shared thread pool to use for the consumer. By default each consumer has its own single threaded thread pool. ScheduledExecutorService

scheduler (scheduler) To use a cron scheduler from either camel-spring or camel-quartz component. Use value spring or quartz for built in scheduler none Object

schedulerProperties (scheduler) To configure additional properties when using a custom scheduler or any of the Quartz, Spring based scheduler. Map

startScheduler (scheduler) Whether the scheduler should be auto started. true boolean

timeUnit (scheduler) Time unit for initialDelay and delay options. There are 7 enums and the value can be one of: NANOSECONDS, MICROSECONDS, MILLISECONDS, SECONDS, MINUTES, HOURS, DAYS MILLISECONDS TimeUnit

useFixedDelay (scheduler) Controls if fixed delay or fixed rate is used. See ScheduledExecutorService in JDK for details. true boolean

kerberosConfigFileLocation (security) The location of the kerb5.conf file (https://web.mit.edu/kerberos/krb5-1.12/doc/admin/conf_files/krb5_conf.html) String

kerberosKeytabLocation (security) The location of the keytab file used to authenticate with the kerberos nodes (contains pairs of kerberos principals and encrypted keys (which are derived from the Kerberos password)) String

kerberosUsername (security) The username used to authenticate with the kerberos nodes String