-- build used

cat docs/INFO_SRC
commit: 5213d6a67df504e4b36f2219c8e103487752713d
date: 2021-04-23 17:00:38 +0200
build-date: 2021-04-23 15:07:39 +0000
short: 5213d6a67df
branch: mysql-8.0.25-release

MySQL source 8.0.25


-- Env (Doesn't look platform dependent but just including my env on which I attempted to repro)
 cat /etc/*release
Oracle Linux Server release 7.8
NAME="Oracle Linux Server"
VERSION="7.8"
ID="ol"
ID_LIKE="fedora"
VARIANT="Server"
VARIANT_ID="server"
VERSION_ID="7.8"
PRETTY_NAME="Oracle Linux Server 7.8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:oracle:linux:7:8:server"
HOME_URL="https://linux.oracle.com/"
BUG_REPORT_URL="https://bugzilla.oracle.com/"

ORACLE_BUGZILLA_PRODUCT="Oracle Linux 7"
ORACLE_BUGZILLA_PRODUCT_VERSION=7.8
ORACLE_SUPPORT_PRODUCT="Oracle Linux"
ORACLE_SUPPORT_PRODUCT_VERSION=7.8
Red Hat Enterprise Linux Server release 7.8 (Maipo)
Oracle Linux Server release 7.8
 cat /etc/*release
Oracle Linux Server release 7.8
NAME="Oracle Linux Server"
VERSION="7.8"
ID="ol"
ID_LIKE="fedora"
VARIANT="Server"
VARIANT_ID="server"
VERSION_ID="7.8"
PRETTY_NAME="Oracle Linux Server 7.8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:oracle:linux:7:8:server"
HOME_URL="https://linux.oracle.com/"
BUG_REPORT_URL="https://bugzilla.oracle.com/"

ORACLE_BUGZILLA_PRODUCT="Oracle Linux 7"
ORACLE_BUGZILLA_PRODUCT_VERSION=7.8
ORACLE_SUPPORT_PRODUCT="Oracle Linux"
ORACLE_SUPPORT_PRODUCT_VERSION=7.8
Red Hat Enterprise Linux Server release 7.8 (Maipo)
Oracle Linux Server release 7.8



-- No, conf provided and hence assuming server is up with default conf

rm -rf 103743/
rm -rf keyring/
mkdir keyring
bin/mysqld --initialize-insecure --basedir=$PWD --datadir=$PWD/103743 --log-error-verbosity=3
bin/mysqld --no-defaults --basedir=$PWD --datadir=$PWD/103743 --core-file --socket=/tmp/mysql_ushastry.sock  --port=3333 --log-error=$PWD/103743/log.err --mysqlx-port=33330 --mysqlx-socket=/tmp/mysql_x_ushastry.sock --log-error-verbosity=3  --secure-file-priv=/tmp/ --early-plugin-load='keyring_file.so' --keyring_file_data=$PWD/keyring/keyring  2>&1 &

- create 15K encrypted tables
- tried silly way to create
cat k.sh
#!/bin/bash


cat << EOF
DROP DATABASE IF EXISTS test;
CREATE DATABASE test;
use test;
EOF

for i in {0..15000}
do
cat << EOF
CREATE TABLE t${i}(doi varchar(50) DEFAULT NULL) ENGINE=InnoDB DEFAULT CHARSET=utf8 ENCRYPTION='Y';
EOF
done

-

bash k.sh >> 103743.sql

- import 

bin/mysql -uroot -S /tmp/mysql_ushastry.sock < 103743.sql

-- restart
bin/mysql -uroot -S /tmp/mysql_ushastry.sock
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 8.0.25 MySQL Community Server - GPL

Copyright (c) 2000, 2021, Oracle and/or its affiliates.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> shutdown;
Query OK, 0 rows affected (0.00 sec)

mysql> \q
Bye


- from error log

2021-05-20T08:15:15.265624Z 1 [Note] [MY-013018] [InnoDB] Created 128 and tracked 128 new rollback segment(s) in the temporary tablespace. 128 are now active.
2021-05-20T08:15:15.267249Z 1 [Note] [MY-012976] [InnoDB] 8.0.25 started; log sequence number 229247191
2021-05-20T08:15:15.276262Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2021-05-20T08:15:15.293293Z 1 [Note] [MY-011089] [Server] Data dictionary restarting version '80023'.
2021-05-20T08:15:15.933232Z 1 [Note] [MY-012357] [InnoDB] Reading DD tablespace files
2021-05-20T08:15:16.422300Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t0.ibd successfully, encryption of this tablespace enabled.
.
.
2021-05-20T08:22:05.828394Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14992.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:05.878949Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14993.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:05.929267Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14994.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:05.979932Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14995.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.030260Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14996.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.081801Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14997.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.132236Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14998.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.183143Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t14999.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.234322Z 0 [Note] [MY-012227] [InnoDB] Read encryption metadata from ./test/t15000.ibd successfully, encryption of this tablespace enabled.
2021-05-20T08:22:06.281618Z 1 [Note] [MY-012356] [InnoDB] Scanned 15007 tablespaces. Validated 15007.
2021-05-20T08:22:06.352607Z 1 [Note] [MY-010006] [Server] Using data dictionary with version '80023'.
2021-05-20T08:22:06.484187Z 0 [Note] [MY-011332] [Server] Plugin mysqlx reported: 'IPv6 is available'
2021-05-20T08:22:06.535556Z 0 [Note] [MY-011323] [Server] Plugin mysqlx reported: 'X Plugin ready for connections. bind-address: '::' port: 33330'
2021-05-20T08:22:06.584978Z 0 [Note] [MY-011323] [Server] Plugin mysqlx reported: 'X Plugin ready for connections. socket: '/tmp/mysql_x_ushastry.sock''
2021-05-20T08:22:06.637066Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Bind-address: '::' port: 33330, socket: /tmp/mysql_x_ushastry.sock
2021-05-20T08:22:06.724004Z 0 [Note] [MY-010902] [Server] Thread priority attribute setting in Resource Group SQL shall be ignored due to unsupported platform or insufficient privilege.
2021-05-20T08:22:06.799747Z 0 [Note] [MY-012487] [InnoDB] DDL log recovery : begin
2021-05-20T08:22:06.848294Z 0 [Note] [MY-012488] [InnoDB] DDL log recovery : end
2021-05-20T08:22:06.898245Z 0 [Note] [MY-011946] [InnoDB] Loading buffer pool(s) from /home/umshastr/work/binaries/ga/mysql-8.0.25/103743/ib_buffer_pool
2021-05-20T08:22:06.948708Z 0 [Note] [MY-012922] [InnoDB] Waiting for purge to start
2021-05-20T08:22:07.087460Z 0 [Note] [MY-010913] [Server] You have not provided a mandatory server-id. Servers in a replication topology must have unique server-ids. Please refer to the proper server start-up parameters documentation.
2021-05-20T08:22:07.193136Z 0 [Note] [MY-010182] [Server] Found ca.pem, server-cert.pem and server-key.pem in data directory. Trying to enable SSL support using them.
2021-05-20T08:22:07.242679Z 0 [Note] [MY-010304] [Server] Skipping generation of SSL certificates as certificate files are present in data directory.
2021-05-20T08:22:07.295956Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2021-05-20T08:22:07.345490Z 0 [System] [MY-013602] [Server] Channel mysql_main configured to support TLS. Encrypted connections are now supported for this channel.
2021-05-20T08:22:07.394727Z 0 [Note] [MY-010308] [Server] Skipping generation of RSA key pair through --sha256_password_auto_generate_rsa_keys as key files are present in data directory.
2021-05-20T08:22:07.443123Z 0 [Note] [MY-010308] [Server] Skipping generation of RSA key pair through --caching_sha2_password_auto_generate_rsa_keys as key files are present in data directory.
2021-05-20T08:22:07.494899Z 0 [Note] [MY-010252] [Server] Server hostname (bind-address): '*'; port: 3333
2021-05-20T08:22:07.544486Z 0 [Note] [MY-010253] [Server] IPv6 is available.
2021-05-20T08:22:07.594409Z 0 [Note] [MY-010264] [Server]   - '::' resolves to '::';
2021-05-20T08:22:07.644221Z 0 [Note] [MY-010251] [Server] Server socket created on IP: '::'.
2021-05-20T08:22:07.751896Z 0 [Note] [MY-011025] [Repl] Failed to start slave threads for channel ''.
2021-05-20T08:22:07.803154Z 5 [Note] [MY-010051] [Server] Event Scheduler: scheduler thread started with id 5
2021-05-20T08:22:07.870016Z 0 [Note] [MY-011240] [Server] Plugin mysqlx reported: 'Using SSL configuration from MySQL Server'
2021-05-20T08:22:07.872650Z 0 [Note] [MY-011243] [Server] Plugin mysqlx reported: 'Using OpenSSL for TLS connections'
2021-05-20T08:22:07.872879Z 0 [System] [MY-010931] [Server] /home/umshastr/work/binaries/ga/mysql-8.0.25/bin/mysqld: ready for connections. Version: '8.0.25'  socket: '/tmp/mysql_ushastry.sock'  port: 3333  MySQL Community Server - GPL.
2021-05-20T08:22:09.857804Z 0 [Note] [MY-011946] [InnoDB] Buffer pool(s) load completed at 210520 10:22:09


## Workaround - As Sunny suggested use --innodb-validate-tablespace-paths=OFF 

bin/mysqld --no-defaults --basedir=$PWD --datadir=$PWD/103743 --core-file --socket=/tmp/mysql_ushastry.sock  --port=3333 --log-error=$PWD/103743/log.err --mysqlx-port=33330 --mysqlx-socket=/tmp/mysql_x_ushastry.sock --log-error-verbosity=3  --secure-file-priv=/tmp/ --early-plugin-load='keyring_file.so' --keyring_file_data=$PWD/keyring/keyring  --innodb-validate-tablespace-paths=OFF 2>&1 &

.
No issues observed