pyspark 从 hbase 读取数据

如何解决pyspark 从 hbase 读取数据

Hadoop: 3.2.1
hbase：2.3.4
火花：2.4.7
蟒蛇：3.7.6

Hbase 表："tmp"

hbase(main):001:0> scan "tmp"
ROW                                          COLUMN+CELL                                                                                                                       
 1                                           column=cols:age,timestamp=2021-06-22T14:17:31.735,value=10                                                               
 1                                           column=cols:name,timestamp=2021-06-22T14:17:23.037,value=tom                                                                  
 2                                           column=cols:age,timestamp=2021-06-22T14:17:40.157,value=11                                                                    
 2                                           column=cols:name,timestamp=2021-06-22T14:17:48.516,value=dim  

火花壳：
pyspark \
--master 纱线 \
--deploy-mode 客户端 \
--num-executors 5 \
--executor-cores 1 \
--driver-memory 6g \
--executor-memory 1g \
--packages org.apache.hbase.connectors.spark:hbase-spark:1.0.0

火花代码：

from pyspark.sql import SparkSession

spark = SparkSession.builder.getOrCreate()

df = (spark.read.format("org.apache.hadoop.hbase.spark")
                .option("hbase.table","tmp")
                .option("hbase.columns.mapping","col1 STRING :key,col2 STRING cols:name,col3 STRING cols:age")
                .load())
df.show()

我在 pyspark shell 中运行 pyspark 代码。 但我收到一个错误。

Traceback (most recent call last):
    File "<stdin>",line 1,in <module>
    File "/usr/lib/spark-current/python/pyspark/sql/readwriter.py",line 172,in load
        return self._df(self._jreader.load())
    File "/usr/lib/spark-current/python/lib/py4j-0.10.7-src.zip/py4j/java_gateway.py",line 1257,in __call__
    File "/usr/lib/spark-current/python/pyspark/sql/utils.py",line 67,in deco
        return f(*a,**kw)
    File "/usr/lib/spark-current/python/lib/py4j-0.10.7-src.zip/py4j/protocol.py",line 328,in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling o169.load.
: java.lang.NullPointerException
    at org.apache.hadoop.hbase.spark.HBaseRelation.<init>(DefaultSource.scala:138)
    at org.apache.hadoop.hbase.spark.DefaultSource.createRelation(DefaultSource.scala:69)
    at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:365)
    at org.apache.spark.sql.DataFrameReader.loadV1Source(DataFrameReader.scala:242)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:230)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:186)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:244)
    at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
    at py4j.Gateway.invoke(Gateway.java:282)
    at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:132)
    at py4j.commands.CallCommand.execute(CallCommand.java:79)
    at py4j.GatewayConnection.run(GatewayConnection.java:238)
    at java.lang.Thread.run(Thread.java:748)