在我们的Spark应用中,我们使用 Spark structured streaming
. 它采用 Kafka as input stream
,&。HiveAcid as writeStream
到Hive表.对于 HiveAcid
它是一个开源库,名为 spark acid
从 qubole
: https:/github.comqubolespark-acid。
以下是我们的代码。
import za.co.absa.abris.avro.functions.from_confluent_avro
....
val spark = SparkSession
.builder()
.appName("events")
.config("spark.sql.streaming.metricsEnabled", true)
.enableHiveSupport()
.getOrCreate()
import spark.implicits._
val input_stream_df = spark.readStream
.format("kafka")
.option("kafka.bootstrap.servers", "kafka:9092")
.option("startingOffsets", '{"events":{"0":2310384922,"1":2280420020,"2":2278027233,"3":2283047819,"4":2285647440}}')
.option("maxOffsetsPerTrigger", 10000)
.option("subscribe", "events")
.load()
// schema registry config
val srConfig = Map(
"schema.registry.url" -> "http://schema-registry:8081",
"value.schema.naming.strategy" -> "topic.name",
"schema.registry.topic" -> "events",
"value.schema.id" -> "latest"
)
val data = input_stream_df
.withColumn("value", from_confluent_avro(col("value"), srConfig))
.withColumn("timestamp_s", from_unixtime($"value.timestamp" / 1000))
.select(
$"value.*",
year($"timestamp_s") as 'year,
month($"timestamp_s") as 'month,
dayofmonth($"timestamp_s") as 'day
)
// format "HiveAcid" is provided by spark-acid lib from Qubole
val output_stream_df = data.writeStream.format("HiveAcid")
.queryName("hiveSink")
.option("database", "default")
.option("table", "events_sink")
.option("checkpointLocation", "/user/spark/events/checkpoint")
.option("spark.acid.streaming.log.metadataDir", "/user/spark/events/checkpoint/spark-acid")
.option("metastoreUri", "thrift://hive-metastore:9083")
.trigger(Trigger.ProcessingTime("30 seconds"))
.start()
output_stream_df.awaitTermination()
我们能够将应用程序部署到生产中,并重新部署了几次(大约10次),没有问题。然后就遇到了以下错误。
查询hiveSink [id = 080a9f25-23d2-4ec8-a8c0-1634398d6d29, runId = 990d3bba-0f7f-4bae-9f41-b43db6d1aeb3] 异常终止。任务因阶段性失败而中止。0.0阶段的任务3失败了4次,最近一次失败。0.0阶段的任务3.3丢失(TID42,10.236.7.228,执行者3):org.apache.hadoop.fs.FileAlreadyExistsException: warehousetablespacemanagedhiveeventsyear=2020month=5day=18delta_0020079_0020079bucket_00003 for client 10. 236.7.228已经存在(...)在com.qubole.shaded.orc.impl.PhysicalFsWriter.(PhysicalFsWriter.java:95)在com.qubole.shaded.orc. impl.WriterImpl.(WriterImpl.java:177) at com.qubole.shaded.hadoop.ql.io.orc.WriterImpl.(WriterImpl.java:94) at com.qubole.shaded.hadoop.ql.io.orc.OrcFile.createWriter(OrcFile. java:334) at com.qubole.shaded.hadoop.hive.ql.io.orc.OrcRecordUpdater.initWriter(OrcRecordUpdater.java:602) at com.qubole.shaded.hadoop.hive.ql.io.orc.OrcRecordUpdater. addSimpleEvent(OrcRecordUpdater.java:423) at com.qubole.shaded.hadoop.hive.ql.io.orc.OrcRecordUpdater.addSplitUpdateEvent(OrcRecordUpdater.java:432) at com.qubole.shaded.hadoop. hive.ql.io.orc.OrcRecordUpdater.insert(OrcRecordUpdater.java:484) at com.qubole.spark.hiveacid.writer.hive.HiveAcidFullAcidWriter.process(HiveAcidWriter.scala:295) at com.qubole. 在com.qubole.spark.hiveacid.writer.TableWriter$anon$1$anonfun$6.apply(TableWriter.scala:153) (......)处。 ...)在com.qubole.spark.hiveacid.writer.TableWriter$anon$1.apply(TableWriter.scala:153) 在com.qubole.spark.hiveacid.writer.TableWriter$anon$1.apply(TableWriter.scala:139)
每次重启应用程序,它都会显示不同的。delta + bucket files
已经存在的错误。然而,这些文件是每次启动时新创建的(很可能),但不知道为什么会抛出错误。
任何指针将非常感激。
我从worker的错误日志中发现了实际的根本原因。这是由于我在其中一个使用的库中做了代码修改,导致了 out of memory
的问题。
我之前发的是驱动的错误日志,在worker节点上出现了几次故障后。