如何解决java.sql.SQLException:内存不足,请考虑增加服务器排序缓冲区的大小
我正在尝试通过JDBC使用Java运行此查询:
SELECT * FROM jobs WHERE 0=0 # find all occurrences of the search string + any component of the search string
OR job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','software','%')
OR job_description COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%')
OR job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','engineer','%')
AND date_posted >= now() - INTERVAL 30 DAY # ensure results are from the last month
ORDER BY
# order first by results that begin with the search string
job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('software engineer','%') DESC,# order second by results that contain the search string
IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,'software engineer'),0),99999) DESC,# order third by results that contain the first component of the search string
IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,'software'),# order forth by results that contain the second component of the search string
IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,'engineer'),# order alphabetically
job_title,IFNULL(NULLIF(INSTR(job_description COLLATE utf8mb4_0900_ai_ci,99999);
当我在MySQL终端中运行此查询时,它运行良好。但是,当我通过JDBC运行它时,searchTokens = ['software','engineer']
var searchTokens = searchValue.split(" ");
String query = "SELECT * FROM jobs WHERE 0=0 \n";
for (String token : searchTokens) {
query += String.format(" OR job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%%','%s','%%')\n",token);
query += String.format(" OR job_description COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%%',token);
}
query += " AND date_posted >= now() - INTERVAL 30 DAY\n ORDER BY\n";
query += String.format(" job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%s','%%') DESC,\n",searchValue);
query +=
String.format(" IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,'%s'),99999),searchValue);
for (String token : searchTokens) {
query +=
String.format(" IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,token);
}
query += String.format(" job_title,\n" +
" IFNULL(NULLIF(INSTR(job_description COLLATE utf8mb4_0900_ai_ci,99999);",searchValue);
List<Map<String,Object>> result = jdbcTemplate.queryForList(query);
我收到此错误:
nested exception is org.springframework.jdbc.UncategorizedSQLException: StatementCallback; uncategorized SQLException for SQL [SELECT * FROM jobs WHERE 0=0
OR job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%')
OR job_description COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%')
OR job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%')
AND date_posted >= now() - INTERVAL 30 DAY
ORDER BY
job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('software engineer',IFNULL(NULLIF(INSTR(job_title COLLATE utf8mb4_0900_ai_ci,job_title,99999);]; SQL state [HY001]; error code [1038]; Out of sort memory,consider increasing server sort buffer size; nested exception is java.sql.SQLException: Out of sort memory,consider increasing server sort buffer size] with root cause
java.sql.SQLException: Out of sort memory,consider increasing server sort buffer size
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) ~[mysql-connector-java-8.0.17.jar:8.0.17]
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.17.jar:8.0.17]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.17.jar:8.0.17]
at com.mysql.cj.jdbc.StatementImpl.executeQuery(StatementImpl.java:1200) ~[mysql-connector-java-8.0.17.jar:8.0.17]
at org.springframework.jdbc.core.JdbcTemplate$1QueryStatementCallback.doInStatement(JdbcTemplate.java:439) ~[spring-jdbc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:376) ~[spring-jdbc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:452) ~[spring-jdbc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:462) ~[spring-jdbc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.jdbc.core.JdbcTemplate.queryForList(JdbcTemplate.java:490) ~[spring-jdbc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at com.jobtech.controller.JobroleSearchController.submit(JobroleSearchController.java:49) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) ~[na:na]
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) ~[na:na]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
at java.base/java.lang.Thread.run(Thread.java:830) ~[na:na]
我尝试将sort_buffer_size设置为256K,并且此错误仍然存在。但是,我读到将排序缓冲区的大小设置得太大是不好的。当它在MySQL终端中运行正常时,是什么导致我在此SQL语句中出现错误?
解决方法
您可能可以通过修复where
子句来解决内存不足的问题。日期过滤仅适用于最后一个条件,因为括号是错误的。
所以:
WHERE (job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','software','%') OR
job_description COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%') OR
job_title COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','engineer','%') OR
ob_description COLLATE utf8mb4_0900_ai_ci LIKE CONCAT('%','%')
) AND
date_posted >= now() - INTERVAL 30 DAY
注意:为了提高性能,您可能需要考虑在此表上使用全文本索引。另外,在查询中使用collate
会提出数据建模问题。如果要区分大小写的搜索。 。 。嗯,无论如何这是MySQL中的正常默认值。
这是因为数据库的内部缓冲区对于查询而言很小。
您可以在以下配置文件/etc/mysql/my.cnf
中增加缓冲区:
sort_buffer_size to 512K
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