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Posted to common-issues@hadoop.apache.org by "Steve Loughran (JIRA)" <ji...@apache.org> on 2019/06/11 12:13:00 UTC
[jira] [Updated] (HADOOP-16360) S3A NullPointerException: null uri
host. This can be caused by unencoded / in the password string
[ https://issues.apache.org/jira/browse/HADOOP-16360?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran updated HADOOP-16360:
------------------------------------
Summary: S3A NullPointerException: null uri host. This can be caused by unencoded / in the password string (was: java.lang.NullPointerException: null uri host. This can be caused by unencoded / in the password string)
> S3A NullPointerException: null uri host. This can be caused by unencoded / in the password string
> -------------------------------------------------------------------------------------------------
>
> Key: HADOOP-16360
> URL: https://issues.apache.org/jira/browse/HADOOP-16360
> Project: Hadoop Common
> Issue Type: Bug
> Components: fs/s3
> Affects Versions: 3.0.3
> Reporter: Ladislav Jech
> Priority: Minor
>
> I am experiencing very old issue appearing now again on Cloudera cluster 6.2. I use following libraries with pyspark job:
> * /opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.0.p0.967373/lib/hadoop/hadoop-common-3.0.0-cdh6.2.0.jar
> * /opt/cloudera/parcels/CDH-6.2.0-1.cdh6.2.0.p0.967373/lib/hadoop/hadoop-aws-3.0.0-cdh6.2.0.jar
> While trying to write DF to S3 as CSV I get following error:
> {code:java}
> java.lang.NullPointerException: null uri host. This can be caused by unencoded / in the password string
> at java.util.Objects.requireNonNull(Objects.java:228)
> at org.apache.hadoop.fs.s3native.S3xLoginHelper.buildFSURI(S3xLoginHelper.java:69)
> at org.apache.hadoop.fs.s3a.S3AFileSystem.setUri(S3AFileSystem.java:467)
> at org.apache.hadoop.fs.s3a.S3AFileSystem.initialize(S3AFileSystem.java:234)
> at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3288)
> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:123)
> at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3337)
> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3305)
> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:476)
> at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
> at org.apache.spark.sql.execution.datasources.DataSource.planForWritingFileFormat(DataSource.scala:423)
> at org.apache.spark.sql.execution.datasources.DataSource.planForWriting(DataSource.scala:523)
> at org.apache.spark.sql.DataFrameWriter.saveToV1Source(DataFrameWriter.scala:281)
> at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:270)
> at org.apache.spark.sql.DataFrameWriter.save(DataFrameWriter.scala:228)
> 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)
> // code placeholder
> {code}
> I specify secret key via configuration, not via path (as older bugs reported) and on top of that my Secret key doesn't have any slash, but access key has dash '-' character and
> AWS_HOST_BASE I define with '[http://host.domain.suffix/'] form
> My code doesn't use secret key in s3 path, but as follows:
> {code:java}
> sparkSession = SparkSession.builder.getOrCreate()
> sparkContext = sparkSession.sparkContext
> #sparkContext._jsc.hadoopConfiguration().set("fs.s3a.multipart.size", "1000000")
> sparkContext._jsc.hadoopConfiguration().set("fs.s3a.access.key", AWS_ACCESS_KEY_ID) sparkContext._jsc.hadoopConfiguration().set("fs.s3a.secret.key", AWS_SECRET_ACCESS_KEY) sparkContext._jsc.hadoopConfiguration().set("fs.s3a.endpoint", AWS_HOST_BASE) sparkContext._jsc.hadoopConfiguration().set("fs.s3.access.key", AWS_ACCESS_KEY_ID) sparkContext._jsc.hadoopConfiguration().set("fs.s3.secret.key", AWS_SECRET_ACCESS_KEY) sparkContext._jsc.hadoopConfiguration().set("fs.s3.endpoint", AWS_HOST_BASE) sparkContext._jsc.hadoopConfiguration().set("fs.s3n.access.key", AWS_ACCESS_KEY_ID) sparkContext._jsc.hadoopConfiguration().set("fs.s3n.secret.key", AWS_SECRET_ACCESS_KEY) sparkContext._jsc.hadoopConfiguration().set("fs.s3n.endpoint", AWS_HOST_BASE)
> sqlContext = SQLContext(sparkSession.sparkContext)
> # log4j = sparkContext._jvm.org.apache.log4j
> # pylint: disable=W0212
> logger = sparkContext._jvm.org.apache.log4j.LogManager.getLogger("OracleToS3")
> # logger = log4j.LogManager.getlogger(__name__)
> sparkContext.setLogLevel('INFO')
> logger.info("Going to process Oracle tables...")
> for table in Source.table_list:
> logger.info("Reading oracle table into dataframe")
> oracle_table = sparkContext.read \
> .format("jdbc") \
> .option("url", Source.jdbc_string) \
> .option("dbtable", table) \
> .option("user", Source.user) \
> .option("password", Source.password) \
> .option("driver", "oracle.jdbc.driver.OracleDriver") \
> .load()
> # Display schema
> logger.info("Display table schema")
> oracle_table.show()
> logger.info("Display table top 5")
> oracle_table.head(5)
> output_file = "s3a://201906/" + "11/" + table + "_" + time.strftime("%Y%m%d_%H%M%S") +".csv"
> logger.info("Writing table into S3 to file: " + output_file)
> oracle_table\
> .repartition(1)\
> .write \
> .mode("overwrite")\
> .format("csv")\
> .option("header","true") \
> .save("s3a://201906/" + "11/" + table + "_" + time.strftime("%Y%m%d_%H%M%S") +".csv")
> {code}
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