Illegal reflective access. v3.11.0

[vitaliislobodianyk-okta]

After an upgrade of snowflake-jdbc from 3.10.3 to 3.11.0 version, started to see the following message when any SQL statement is executed.

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil (file:/<redacted>/.m2/repository/net/snowflake/snowflake-jdbc/3.11.0/snowflake-jdbc-3.11.0.jar) to constructor java.nio.DirectByteBuffer(long,int)

Java version

openjdk version "11.0.4" 2019-07-16 LTS
OpenJDK Runtime Environment Corretto-11.0.4.11.1 (build 11.0.4+11-LTS)
OpenJDK 64-Bit Server VM Corretto-11.0.4.11.1 (build 11.0.4+11-LTS, mixed mode)

[eduardompinto]

Also having this issue

openjdk version "1.8.0_232"
OpenJDK Runtime Environment (Zulu 8.42.0.23-CA-macosx) (build 1.8.0_232-b18)
OpenJDK 64-Bit Server VM (Zulu 8.42.0.23-CA-macosx) (build 25.232-b18, mixed mode)

[jeffersonatsafe]

still having this issue in jdbc driver version: 3.11.1

Ubuntu 18.04 x64
openjdk version "11.0.6" 2020-01-14
OpenJDK Runtime Environment (build 11.0.6+10-post-Ubuntu-1ubuntu118.04.1)
OpenJDK 64-Bit Server VM (build 11.0.6+10-post-Ubuntu-1ubuntu118.04.1, mixed mode, sharing)

edit: I've also tried this on Windows 10, running openjdk-11.28, and the same message showed up.

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil (file:/C:/Users/jpoernomo/.m2/repository/net/snowflake/snowflake-jdbc/3.11.1/snowflake-jdbc-3.11.1.jar) to constructor java.nio.DirectByteBuffer(long,int)
WARNING: Please consider reporting this to the maintainers of net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

[ghost]

same here, Flyway 6.2.4 + jdbc 3.11.1

[sfc-gh-stakeda]

Added to the backlog.

[mwegit]

Same issue for me

linux version

NAME="Red Hat Enterprise Linux Server"
VERSION="7.7 (Maipo)"
ID="rhel"
ID_LIKE="fedora"
VARIANT="Server"
VARIANT_ID="server"
VERSION_ID="7.7"
PRETTY_NAME="Red Hat Enterprise Linux"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:redhat:enterprise_linux:7.7:GA:server"
HOME_URL="https://www.redhat.com/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"

java version

java -version
openjdk version "1.8.0_242"
OpenJDK Runtime Environment (build 1.8.0_242-b08)
OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)

flyway Error

2020-04-10T15:42:58.5785361Z Flyway Community Edition 6.2.3 by Redgate
2020-04-10T15:42:59.9366343Z Database: jdbc:snowflake://xxxx.snowflakecomputing.com:443/ (Snowflake 4.11)
2020-04-10T15:43:00.1502475Z WARNING: An illegal reflective access operation has occurred
2020-04-10T15:43:00.1504973Z WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil (file:/home/xxx/flyway-6.2.3/drivers/snowflake-jdbc-3.12.0.jar) to constructor java.nio.DirectByteBuffer(long,int)
2020-04-10T15:43:00.1506832Z WARNING: Please consider reporting this to the maintainers of net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil
2020-04-10T15:43:00.1508173Z WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
2020-04-10T15:43:00.1510410Z WARNING: All illegal access operations will be denied in a future release
2020-04-10T15:43:02.4767945Z Schema version: << Empty Schema >>

[mrn3]

I have seen this issue as well, although it is just a warning so allows me to proceed. This isn't blocking anyone is it?

[vmandrychenko]

Same warning while connecting to the snowflake database.

Driver: snowflake-jdbc: 3.12.5
OS: Mac OS Mojave: 10.14.6
JDK:

$ java --version
openjdk 11.0.7 2020-04-14
OpenJDK Runtime Environment AdoptOpenJDK (build 11.0.7+10)
Eclipse OpenJ9 VM AdoptOpenJDK (build openj9-0.20.0, JRE 11 Mac OS X amd64-64-Bit Compressed References 20200422_558 (JIT enabled, AOT enabled)
OpenJ9   - 05fa2d361
OMR      - d4365f371
JCL      - 838028fc9d based on jdk-11.0.7+10)

The warning that shows up is:

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil (file:/Users/vm/Library/Caches/Coursier/v1/https/repo1.maven.org/maven2/net/snowflake/snowflake-jdbc/3.12.5/snowflake-jdbc-3.12.5.jar) to constructor java.nio.DirectByteBuffer(long,int)
WARNING: Please consider reporting this to the maintainers of net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release

[viddev1]

I am also receiving this warning, Was there any resolution for this?

Driver Dependency:

[qqcvd]

I have the same issue.

[alexbegg]

I also have a similar issue with snowflake-jdbc version 3.12.0 and Flyway version 7.3.2, however in my case it is illegal reflective access by net.snowflake.client.jdbc.internal.org.bouncycastle.jcajce.provider.drbg.DRBG to constructor sun.security.provider.Sun() instead of by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil to constructor java.nio.DirectByteBuffer(long,int). Here is my warning:

WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.org.bouncycastle.jcajce.provider.drbg.DRBG (file:/usr/local/Cellar/flyway/7.3.2/libexec/drivers/snowflake-jdbc-3.12.0.jar) to constructor sun.security.provider.Sun()

It seems that the bouncycastle maintainers fixed that issue in 2019, sosnowflake-jdbc might be using an outdated version of bouncycastle... bcgit/bc-java#510

[imrjk]

Hi all
is this issue resolved yet?

i'm also getting the similar issue.

WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil (jar:file:/appBase/app.jar!/BOOT-INF/lib/snowflake-jdbc-3.11.0.jar!/) to constructor java.nio.DirectByteBuffer(long,int)
WARNING: Please consider reporting this to the maintainers of net.snowflake.client.jdbc.internal.io.netty.util.internal.ReflectionUtil

Java version : 11.0.7
snowflake jdbc version : 3.11.0

[shaounak]

Using Java 14 and the latest version of the driver, this is still giving the issue -

openjdk 14.0.2 2020-07-14
OpenJDK Runtime Environment (build 14.0.2+12-Ubuntu-120.04)
OpenJDK 64-Bit Server VM (build 14.0.2+12-Ubuntu-120.04, mixed mode, sharing)

SNOWFLAKE_VERSION=3.13.3

[vitaliislobodianyk-okta]

This issue is fixed in 3.13.3 version of the driver.
Tested with Java 11 and Java 15.