【产品名称】oceanbase-ce
【产品版本】3.1.2
【问题描述】我启动oceanbase后，执行优化语句：
alter system set memory_limit=‘12G’;
SET GLOBAL ob_trx_timeout=36000000000,GLOBAL ob_query_timeout=36000000000;
set global ob_sql_work_area_percentage=30;
alter system set freeze_trigger_percentage=30;
set global max_allowed_packet=1073741824;
再执行./obdumper -h 127.0.0.1 -P 2881 -u root -p abc123 --sys-password rootPWD123 -t obmysql -D test --csv --table data_pool -f outputs将500W数据导出
再执行./obloader -h 127.0.0.1 -P 2881 -u root -p abc123 --sys-password rootPWD123 -t obmysql -D test2 --csv --table data_pool --external-data -f outputs/data/test/TABLE，执行到400多W数据的时候报错：
2022-01-10 11:30:04 [ERROR] Error occurred when loading data into “test2”.“data_pool” java.sql.SQLNonTransientConnectionException: (conn=-1073479255) Connection is closed
at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.createException(ExceptionFactory.java:73) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.internal.util.exceptions.ExceptionFactory.create(ExceptionFactory.java:192) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.cmdPrologue(AbstractQueryProtocol.java:1945) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.internal.protocol.AbstractQueryProtocol.executeQuery(AbstractQueryProtocol.java:303) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.ClientSidePreparedStatement.executeInternal(ClientSidePreparedStatement.java:220) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.ClientSidePreparedStatement.execute(ClientSidePreparedStatement.java:149) ~[mariadb-java-client-2.7.4.jar:?]
at org.mariadb.jdbc.ClientSidePreparedStatement.executeUpdate(ClientSidePreparedStatement.java:181) ~[mariadb-java-client-2.7.4.jar:?]
at com.oceanbase.tools.loaddump.utils.JdbcUtils.executeUpdate(JdbcUtils.java:294) ~[ob-loader-dumper-3.0.0-RELEASE.jar:?]
at com.oceanbase.tools.loaddump.dumper.writer.rdb.DatabaseWriter$RetryCallback.call(DatabaseWriter.java:546) ~[ob-loader-dumper-3.0.0-RELEASE.jar:?]
at com.oceanbase.tools.loaddump.dumper.writer.rdb.DatabaseWriter$RetryCallback.call(DatabaseWriter.java:435) ~[ob-loader-dumper-3.0.0-RELEASE.jar:?]
at com.github.rholder.retry.AttemptTimeLimiters$NoAttemptTimeLimit.call(AttemptTimeLimiters.java:78) ~[guava-retrying-2.0.0.jar:?]
at com.github.rholder.retry.Retryer.call(Retryer.java:160) ~[guava-retrying-2.0.0.jar:?]
at com.oceanbase.tools.loaddump.dumper.writer.rdb.DatabaseWriter.onEvent(DatabaseWriter.java:305) [ob-loader-dumper-3.0.0-RELEASE.jar:?]
at com.oceanbase.tools.loaddump.dumper.writer.rdb.DatabaseWriter.onEvent(DatabaseWriter.java:71) [ob-loader-dumper-3.0.0-RELEASE.jar:?]
at com.lmax.disruptor.WorkProcessor.run(WorkProcessor.java:143) [disruptor-3.4.2.jar:?]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
请问应该如何解决？