运行 1.12.2 standalone 集群,不定期会出现类似这种错误,请问这有可能是什么原因导致的?谢谢!
Caused by: java.io.IOException: Failed to fetch BLOB fb90d0fce9ff3ad8353ea97e46f9c913/p-bc0d39187ed200f9df64f90463534862858961a2-2ff77a5adb95af29376c6699173c3969 from hb3-dev-gem-svc1-000/10.30.69.13:43003 and store it under /home/gum/flink_tmp/blobStore-e82a4a09-0f9c-4846-902c-b18c6fd09dae/incoming/temp-00001153 at org.apache.flink.runtime.blob.BlobClient.downloadFromBlobServer(BlobClient.java:167) at org.apache.flink.runtime.blob.AbstractBlobCache.getFileInternal(AbstractBlobCache.java:166) at org.apache.flink.runtime.blob.PermanentBlobCache.getFile(PermanentBlobCache.java:187) at org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager$LibraryCacheEntry.createUserCodeClassLoader(BlobLibraryCacheManager.java:251) at org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager$LibraryCacheEntry.getOrResolveClassLoader(BlobLibraryCacheManager.java:228) at org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager$LibraryCacheEntry.access$1100(BlobLibraryCacheManager.java:199) at org.apache.flink.runtime.execution.librarycache.BlobLibraryCacheManager$DefaultClassLoaderLease.getOrResolveClassLoader(BlobLibraryCacheManager.java:333) at org.apache.flink.runtime.taskmanager.Task.createUserCodeClassloader(Task.java:983) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:632) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:570) at java.lang.Thread.run(Thread.java:748) Caused by: java.io.IOException: Could not connect to BlobServer at address hb3-dev-gem-svc1-000/10.30.69.13:43003 at org.apache.flink.runtime.blob.BlobClient.<init>(BlobClient.java:102) at org.apache.flink.runtime.blob.BlobClient.downloadFromBlobServer(BlobClient.java:137) ... 10 more Caused by: java.net.UnknownHostException: hb3-dev-gem-svc1-000 at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) at java.net.Socket.connect(Socket.java:607) at org.apache.flink.runtime.blob.BlobClient.<init>(BlobClient.java:96) ... 11 more -- Sent from: http://apache-flink.147419.n8.nabble.com/