我正在尝试从AWS Athena elb_logs中的演示表中查询数据。
但是，如果尝试使用dbReadTable或dbGetQuery R会话查询数据，则到数据库的连接成功。
library(DBI)
con <- dbConnect(
odbc::odbc(),Driver = "/library/simba/athenaodbc/lib/libathenaodbc_sbu.dylib",S3OutputLocation = "s3://aws-athena-query-results-eu-central-1/",AwsRegion = "eu-central-1",AuthenticationType = "IAM Credentials",UID = Sys.getenv("AWS_accESS_KEY_ID"),PWD = Sys.getenv("AWS_SECRET_accESS_KEY")
)
dbListObjects(con)
dbReadTable(con,name = "elb_logs")
dbGetQuery(con,"SELECT * FROM sampledb.elb_logs")
由reprex package（v0.3.0）于2019-11-10创建
devtools::session_info()
#> ─ Session info ──────────────────────────────────────────────────────────
#> setting value
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#>
#> [1] /library/Frameworks/R.framework/Versions/3.6/Resources/library
这是我直接在R中运行时遇到的错误
*** caught segfault ***
address 0x21,cause 'memory not mapped'
Traceback:
1: new_result(connection@ptr,statement)
2: OdbcResult(connection = conn,statement = statement)
3: dbSendQuery(conn,statement,...)
4: dbSendQuery(conn,...)
5: .local(conn,...)
6: dbGetQuery(con,"SELECT elb_name FROM sampledb.elb_logs LIMIT 10")
7: dbGetQuery(con,"SELECT elb_name FROM sampledb.elb_logs LIMIT 10")
Possible actions:
1: abort (with core dump,if enabled)
2: normal R exit
3: exit R without saving workspace
4: exit R saving workspace
更新 我尝试了另一种方法，但收到了另一条错误消息，该消息似乎与Athena设置更相关。如果有人已经连接到该数据库，我将不胜感激。
library(rJava)
library(RJDBC)
#> Loading required package: DBI
URL <- 'https://s3.amazonaws.com/athena-downloads/drivers/JDBC/SimbaAthenaJDBC_2.0.9/AthenaJDBC42_2.0.9.jar'
fil <- basename(URL)
if (!file.exists(fil)) download.file(URL,fil,mode="wb")
drv <- JDBC(driverClass="com.simba.athena.jdbc.Driver",classpath = fil,identifier.quote="'")
con <- jdbcConnection <- dbConnect(drv,'jdbc:awsathena://athena.us-west-2.amazonaws.com:443/',S3OutputLocation="s3://aws-bmw-athena-results/",user=Sys.getenv("AWS_accESS_KEY_ID"),password=Sys.getenv("AWS_SECRET_accESS_KEY"),)
dfdhis2=dbGetQuery(con,"SELECT elb_name FROM sampledb.elb_logs LIMIT 10")
#> Error in .verify.JDBC.result(r,"Unable to retrieve JDBC result set for ",: Unable to retrieve JDBC result set for SELECT elb_name FROM sampledb.elb_logs LIMIT 10 ([Simba][AthenaJDBC](100071) An error has been thrown from the AWS Athena client. No output location provided. An output location is required either through the Workgroup result configuration setting or as an API input. [Execution ID not available])
由reprex package（v0.3.0）于2019-11-11创建