BigData-flume-hbase-serializer

BigData flume AsyncHbaseEventSerializer implemented with CSV reader and RowKey creator Most of CSV handlers in flume thay split string with comma delimiter "," so the string for ex. a,b,"c,c2",d wil not parse correctly. This project uses Apache common lib for parsing CSV and handles thouse issues.

There are two (2) Types of serialziers:

• AsyncHbaseCSVEventSerializer
• HbaseCSVEventSerializer

Install

# Build 
mvn clean install

# copy the jar to Lib in flume agent
cp target/

Example

When input CSV is like:

ts,36882775649162,5610505046685714
ti,3528885721650035,4903559682490813
ti,30049400044021,6374608174602560

Using in flume configuration

agent007.sinks.sink1.type = org.apache.flume.sink.hbase.AsyncHBaseSink
agent007.sinks.sink1.channel = c1
agent007.sinks.sink1.table = transactions
agent007.sinks.sink1.columnFamily = clients
agent007.sinks.sink1.batchSize = 5000

# Add this
agent007.sinks.sink1.serializer = com.alefbt.bigdata.flume.sink.hbase.AsyncHbaseCSVEventSerializer
agent007.sinks.sink1.serializer.columns = type,id1,id2
agent007.sinks.sink1.serializer.key = type,id2

It will Run hbase put 'table', 'rowkey', 'column', 'value' So each row in example it will run 3 put commands

the RowKey will generated from type,id2 fields

so,

# the config	 
agent007.sinks.sink1.serializer.columns = type,id1,id2
agent007.sinks.sink1.serializer.key = type,id2

# csv value :
ts,36882775649162,5610505046685714

# row key:
ts:5610505046685714

# The actions on HBase will be:
hbase put 'transactions', 'ts:5610505046685714', 'clients:type', 'ts'
hbase put 'transactions', 'ts:5610505046685714', 'clients:id1', '36882775649162'
hbase put 'transactions', 'ts:5610505046685714', 'clients:id2', '5610505046685714'

Developers

Me: Yehuda Korotkin yehuda@alefbt.com

Tested

• On cloudera 5.10 with AsyncHBase mode (was few issues:

Issues

On cloudera 5.10 - HBase "too many items queued"

org.hbase.async.RemoteException: Call queue is full on /0.0.0.0:60020, too many items queued ? According OpenTSDB/opentsdb#783 You should increase hbase.regionserver.handler.count I found that it solved this issue (but opend other issues)

See also

• https://flume.apache.org/FlumeUserGuide.html#asynchbasesink
• https://commons.apache.org/proper/commons-csv/
• https://flume.apache.org/
• http://hbase.apache.org/

License

MIT. (see LICENSE file)