JING ZHANG created FLINK-23886:
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Summary: An exception is thrown out when recover job timers from
savepoint file
Key: FLINK-23886
URL: https://issues.apache.org/jira/browse/FLINK-23886
Project: Flink
Issue Type: Bug
Components: Runtime / State Backends
Reporter: JING ZHANG
Setup Specifics:
Version: 1.6.2
RocksDB Map State
Timers stored in rocksdb
When we have this job running for long periods of time like > 30 days, if for
some reason the job restarts, we encounter "Error while deserializing the
element". Is this a known issue fixed in later versions? I see some changes to
code for FLINK-10175, but we don't use any queryable state
Below is the stack trace
org.apache.flink.util.FlinkRuntimeException: Error while deserializing the
element.
at
org.apache.flink.contrib.streaming.state.RocksDBCachingPriorityQueueSet.deserializeElement(RocksDBCachingPriorityQueueSet.java:389)
at
org.apache.flink.contrib.streaming.state.RocksDBCachingPriorityQueueSet.peek(RocksDBCachingPriorityQueueSet.java:146)
at
org.apache.flink.contrib.streaming.state.RocksDBCachingPriorityQueueSet.peek(RocksDBCachingPriorityQueueSet.java:56)
at
org.apache.flink.runtime.state.heap.KeyGroupPartitionedPriorityQueue$InternalPriorityQueueComparator.comparePriority(KeyGroupPartitionedPriorityQueue.java:274)
at
org.apache.flink.runtime.state.heap.KeyGroupPartitionedPriorityQueue$InternalPriorityQueueComparator.comparePriority(KeyGroupPartitionedPriorityQueue.java:261)
at
org.apache.flink.runtime.state.heap.HeapPriorityQueue.isElementPriorityLessThen(HeapPriorityQueue.java:164)
at
org.apache.flink.runtime.state.heap.HeapPriorityQueue.siftUp(HeapPriorityQueue.java:121)
at
org.apache.flink.runtime.state.heap.HeapPriorityQueue.addInternal(HeapPriorityQueue.java:85)
at
org.apache.flink.runtime.state.heap.AbstractHeapPriorityQueue.add(AbstractHeapPriorityQueue.java:73)
at
org.apache.flink.runtime.state.heap.KeyGroupPartitionedPriorityQueue.<init>(KeyGroupPartitionedPriorityQueue.java:89)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBPriorityQueueSetFactory.create(RocksDBKeyedStateBackend.java:2792)
at
org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend.create(RocksDBKeyedStateBackend.java:450)
at
org.apache.flink.streaming.api.operators.InternalTimeServiceManager.createTimerPriorityQueue(InternalTimeServiceManager.java:121)
at
org.apache.flink.streaming.api.operators.InternalTimeServiceManager.registerOrGetTimerService(InternalTimeServiceManager.java:106)
at
org.apache.flink.streaming.api.operators.InternalTimeServiceManager.getInternalTimerService(InternalTimeServiceManager.java:87)
at
org.apache.flink.streaming.api.operators.AbstractStreamOperator.getInternalTimerService(AbstractStreamOperator.java:764)
at
org.apache.flink.streaming.api.operators.KeyedProcessOperator.open(KeyedProcessOperator.java:61)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.openAllOperators(StreamTask.java:424)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:290)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:711)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.io.EOFException
at java.io.DataInputStream.readUnsignedByte(DataInputStream.java:290)
at org.apache.flink.types.StringValue.readString(StringValue.java:769)
at
org.apache.flink.api.common.typeutils.base.StringSerializer.deserialize(StringSerializer.java:69)
at
org.apache.flink.api.common.typeutils.base.StringSerializer.deserialize(StringSerializer.java:28)
at
org.apache.flink.api.java.typeutils.runtime.RowSerializer.deserialize(RowSerializer.java:179)
at
org.apache.flink.api.java.typeutils.runtime.RowSerializer.deserialize(RowSerializer.java:46)
at
org.apache.flink.streaming.api.operators.TimerSerializer.deserialize(TimerSerializer.java:168)
at
org.apache.flink.streaming.api.operators.TimerSerializer.deserialize(TimerSerializer.java:45)
at
org.apache.flink.contrib.streaming.state.RocksDBCachingPriorityQueueSet.deserializeElement(RocksDBCachingPriorityQueueSet.java:387)
... 20 more
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