Apache Ignite缓存操作失败

Question

我已经使用docker hub的docker镜像安装了Ignite。Ignite服务器节点正确启动。但是当我尝试更新缓存时，我得到了以下异常：

[SEVERE][rest-#35%null%][GridCacheCommandHandler] Failed to execute cache command: GridRestCacheRequest [cacheName=null, cacheFlags=0, ttl=null, super=GridRestRequest [destId=null, clientId=466b7ff5-c303-452e-8f2d-97d59c753de5, addr=null, cmd=CACHE_PUT]]
class org.apache.ignite.IgniteCheckedException: Failed to find cache for given cache name (null for default cache): null
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.localCache(GridCacheCommandHandler.java:754)
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.executeCommand(GridCacheCommandHandler.java:677)
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.handleAsync(GridCacheCommandHandler.java:468)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor.handleRequest(GridRestProcessor.java:264)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor.access$100(GridRestProcessor.java:87)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor$2.body(GridRestProcessor.java:153)
        at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
[14:57:18,637][SEVERE][rest-#35%null%][GridRestProcessor] Failed to handle request: CACHE_PUT
class org.apache.ignite.IgniteCheckedException: Failed to find cache for given cache name (null for default cache): null
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.localCache(GridCacheCommandHandler.java:754)
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.executeCommand(GridCacheCommandHandler.java:677)
        at org.apache.ignite.internal.processors.rest.handlers.cache.GridCacheCommandHandler.handleAsync(GridCacheCommandHandler.java:468)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor.handleRequest(GridRestProcessor.java:264)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor.access$100(GridRestProcessor.java:87)
        at org.apache.ignite.internal.processors.rest.GridRestProcessor$2.body(GridRestProcessor.java:153)
        at org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)

你知道出什么问题了吗？

Answer 1

您应该先创建缓存，然后再开始使用它。使用getOrCreateCache方法。

你可以在doc中阅读更多信息，并检查这个使用cache api的example。

此外，在apache ignite中有许多用于各种用例的示例。