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From yixuan geng <gen...@soulgame.com>
Subject NullPointerException thrown when inserting data to phoenix table using node-hbase-client
Date Thu, 08 May 2014 07:10:53 GMT
Hi all,

I was using the a third-party node-hbase-client library to write data into
hbase from node.js
https://github.com/alibaba/node-hbase-client

It works fine if I am writing to a regular hbase table, but if it is a
table created by phoenix or has phoenix view on top of it, the write
operations failed.

I noticed the exception is thrown from
org.apache.hadoop.hbase.regionserver.wal.*WALEdit*.write(). I vaguely
recall that Phoneix does something special at the WAL level (sorry about my
poor knowledge about hbase impl).

I guess my question is why such a write that works on regular hbase table
cannot work with phonenix tables.  I know this is a hard to debug because
few people actually use node-hbase-client. But if you do play with it, you
can very quickly reproduce this exception with a few lines of js code:

*var HBase = require('hbase-client');*

*var client = HBase.create({ zookeeperHosts: [ 'master-dev:2181'],
zookeeperRoot: '/hbase', });*

*client.putRow('test_table', 'rowkey2', { "testColumn:appid': 'foo_name'},
function (err) { console.log(err); });*

Thanks,
Yixuan

----------
StackTrace:

java.io.IOException: java.io.IOException: java.lang.NullPointerException

at
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.append(SequenceFileLogWriter.java:287)

at
org.apache.hadoop.hbase.regionserver.wal.HLog$LogSyncer.hlogFlush(HLog.java:1296)

at org.apache.hadoop.hbase.regionserver.wal.HLog.syncer(HLog.java:1352)

at org.apache.hadoop.hbase.regionserver.wal.HLog.sync(HLog.java:1476)

at org.apache.hadoop.hbase.regionserver.wal.HLog.append(HLog.java:1177)

at org.apache.hadoop.hbase.regionserver.wal.HLog.append(HLog.java:1217)

at
org.apache.hadoop.hbase.regionserver.HRegion.internalPut(HRegion.java:2926)

at org.apache.hadoop.hbase.regionserver.HRegion.put(HRegion.java:2098)

at
org.apache.hadoop.hbase.regionserver.HRegionServer.put(HRegionServer.java:2242)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

t
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at
org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:323)

at
org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1426)

Caused by: java.lang.NullPointerException

at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:86)

at java.io.DataOutputStream.write(DataOutputStream.java:90)

at org.apache.hadoop.hbase.KeyValue.write(KeyValue.java:2271)

at
org.apache.hadoop.hbase.codec.KeyValueCodec$KeyValueEncoder.write(KeyValueCodec.java:52)

at org.apache.hadoop.hbase.regionserver.wal.*WALEdit*
.write(WALEdit.java:246)

at
org.apache.hadoop.io.serializer.WritableSerialization$WritableSerializer.serialize(WritableSerialization.java:90)

at
org.apache.hadoop.io.serializer.WritableSerialization$WritableSerializer.serialize(WritableSerialization.java:77)

at org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java:1064)

at org.apache.hadoop.io.SequenceFile$Writer.append(SequenceFile.java:1035)

 at
org.apache.hadoop.hbase.regionserver.wal.SequenceFileLogWriter.append(SequenceFileLogWriter.java:284)

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