Question

尽管在配置中设置了过期时间，但看起来数据不会从Ignite缓存中逐出。我注意到当我使用SQL 将数据插入缓存表时，会出现这个问题。

emplCache.query(new SqlFieldsQuery( "CREATE TABLE Employee (id LONG PRIMARY KEY, firstName VARCHAR, lastName VARCHAR, salary DECIMAL, gender VARCHAR)")).getAll(); SqlFieldsQuery insertqry = new SqlFieldsQuery("INSERT INTO Employee (id, firstName, lastName, salary, gender) values (?, ?, ?, ?, ?)"); emplCache.query(insertqry.setArgs(Long.toString(count), words[1], words[2], words[3], words[4])).getAll();

这就是我配置到期的方式：

CacheConfiguration<?, ?> cfg = new CacheConfiguration<>(cacheName); cfg.setCacheMode(CacheMode.PARTITIONED); cfg.setName(cacheName); cfg.setSqlSchema("PUBLIC"); cfg.setAtomicityMode(CacheAtomicityMode.ATOMIC); cfg.setExpiryPolicyFactory(CreatedExpiryPolicy.factoryOf(new Duration(SECONDS, 1)));

但是，如果我使用dataStreamer 插入数据，我没有看到这个问题。

IgniteDataStreamer<Integer, Employee> stmr = ignite.dataStreamer(cfg.getName()) stmr.addData(id, emp);

我是否错过了一些配置设置？

[PS]在Evgenii的回答之后尝试了以下内容：

// This is a util method that returns a cache config for the given cache name and the expiry time in seconds CacheConfiguration<?, ?> cfg = CacheConfig.getCacheConfig("emplCache", 1); IgniteCache<?, ?> emplCache = ignite.getOrCreateCache(cfg); emplCache.query(new SqlFieldsQuery( "CREATE TABLE Employee (id LONG PRIMARY KEY, firstName VARCHAR, lastName VARCHAR, salary DECIMAL, gender VARCHAR)" + "WITH \"template=emplCache\" ")).getAll();

现在我得到了一个例外，即缓存不存在。但我在创建缓存后尝试创建表：

Exception in thread "main" javax.cache.CacheException: class org.apache.ignite.internal.processors.query.IgniteSQLException: Cache doesn't exist: emplCache at org.apache.ignite.internal.processors.cache.IgniteCacheProxy.query(IgniteCacheProxy.java:807) at org.apache.ignite.internal.processors.cache.IgniteCacheProxy.query(IgniteCacheProxy.java:765) at com.demo.ignite.svc.CsvStreamer.main(CsvStreamer.java:33) Caused by: class org.apache.ignite.internal.processors.query.IgniteSQLException: Cache doesn't exist: emplCache at org.apache.ignite.internal.processors.query.h2.ddl.DdlStatementsProcessor.convert(DdlStatementsProcessor.java:277) at org.apache.ignite.internal.processors.query.h2.ddl.DdlStatementsProcessor.runDdlStatement(DdlStatementsProcessor.java:221) at org.apache.ignite.internal.processors.query.h2.IgniteH2Indexing.queryDistributedSqlFields(IgniteH2Indexing.java:1331) at org.apache.ignite.internal.processors.query.GridQueryProcessor$5.applyx(GridQueryProcessor.java:1815) at org.apache.ignite.internal.processors.query.GridQueryProcessor$5.applyx(GridQueryProcessor.java:1813) at org.apache.ignite.internal.util.lang.IgniteOutClosureX.apply(IgniteOutClosureX.java:36) at org.apache.ignite.internal.processors.query.GridQueryProcessor.executeQuery(GridQueryProcessor.java:2293) at org.apache.ignite.internal.processors.query.GridQueryProcessor.querySqlFields(GridQueryProcessor.java:1820) at org.apache.ignite.internal.processors.cache.IgniteCacheProxy.query(IgniteCacheProxy.java:795)

Answer 1

表Employee将在另一个缓存中创建（将为其创建），这就是为什么不会使用配置的ExpiryPolicy。

To configure this new cache add "WITH \"template=CACHE_NAME\""

其中CACHE_NAME是配置中缓存（或模板）的名称。在你的情况下，它是cacheName;

例如，将您的创建脚本更改为：

emplCache.query(new SqlFieldsQuery(
            "CREATE TABLE Employee (id LONG PRIMARY KEY, firstName VARCHAR, lastName VARCHAR, salary DECIMAL, gender VARCHAR) " +
                "WITH \"template=employee\" ")).getAll();

以下是link to doc

如果从java配置缓存，则需要将名为emplCache的缓存添加到Ignite with：

    ignite.addCacheConfiguration(cfg);

如果通过SQL插入，则Ignite Cache条目不会被驱逐

1 个答案: