Hi Stefan, thank you. You were right. It was an unexpected permits issue. Thank you again.
2018-09-17 16:50 GMT+02:00 Stefan Richter <[email protected]>: > Hi, > > I think the exception pretty much says what is wrong, the native library > cannot be mapped into the process because of some access rights problem. > Please make sure that your path /tmp has the exec right. > > Best, > Stefan > > > Am 17.09.2018 um 11:37 schrieb Andrea Spina <[email protected]>: > > Hi everybody, > > I run with a Flink 1.3.2 installation on a Red Hat Enterprise Linux Server > and I'm not able to set rocksdb as state.backend due to this error whenever > I try to deploy any job: > > *java.lang.IllegalStateException: Could not initialize keyed state > backend.* > * at > org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:321)* > * at > org.apache.flink.streaming.api.operators.AbstractStreamOperator.initializeState(AbstractStreamOperator.java:217)* > * at > org.apache.flink.streaming.runtime.tasks.StreamTask.initializeOperators(StreamTask.java:678)* > * at > org.apache.flink.streaming.runtime.tasks.StreamTask.initializeState(StreamTask.java:666)* > * at > org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:252)* > * at org.apache.flink.runtime.taskmanager.Task.run(Task.java:702)* > * at java.lang.Thread.run(Thread.java:748)* > *Caused by: java.io.IOException: Could not load the native RocksDB library* > * at > org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:560)* > * at > org.apache.flink.contrib.streaming.state.RocksDBStateBackend.createKeyedStateBackend(RocksDBStateBackend.java:298)* > * at > org.apache.flink.streaming.runtime.tasks.StreamTask.createKeyedStateBackend(StreamTask.java:756)* > * at > org.apache.flink.streaming.api.operators.AbstractStreamOperator.initKeyedState(AbstractStreamOperator.java:311)* > * ... 6 more* > *Caused by: java.lang.UnsatisfiedLinkError: > /tmp/rocksdb-lib-ab7e3d3688fe883981ec37668bf2cbc3/librocksdbjni-linux64.so: > /tmp/rocksdb-lib-ab7e3d3688fe883981ec37668bf2cbc3/librocksdbjni-linux64.so: > failed to map segment from shared object: Operation not permitted* > * at java.lang.ClassLoader$NativeLibrary.load(Native Method)* > * at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)* > * at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1824)* > * at java.lang.Runtime.load0(Runtime.java:809)* > * at java.lang.System.load(System.java:1086)* > * at > org.rocksdb.NativeLibraryLoader.loadLibraryFromJar(NativeLibraryLoader.java:78)* > * at > org.rocksdb.NativeLibraryLoader.loadLibrary(NativeLibraryLoader.java:56)* > * at > org.apache.flink.contrib.streaming.state.RocksDBStateBackend.ensureRocksDBIsLoaded(RocksDBStateBackend.java:537)* > * ... 9 more* > > Machine detail > > *NAME="Red Hat Enterprise Linux Server"* > *VERSION="7.5 (Maipo)"* > *ID="rhel"* > *ID_LIKE="fedora"* > > Cpu architecture (cat /proc/cpuinfo) > > *processor : 0* > *vendor_id : GenuineIntel* > *cpu family : 6* > *model : 45* > *model name : Intel(R) Xeon(R) CPU E5-2660 0 @ 2.20GHz* > *stepping : 2* > *microcode : 0x710* > *cpu MHz : 2200.000* > *cache size : 20480 KB* > *physical id : 0* > *siblings : 4* > *core id : 0* > *cpu cores : 4* > *apicid : 0* > *initial apicid : 0* > *fpu : yes* > *fpu_exception : yes* > *cpuid level : 13* > *wp : yes* > *flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov pat pse36 clflush dts mmx fxsr sse sse2 ss ht syscall nx rdtscp lm > constant_tsc arch_perfmon pebs bts nopl xtopology tsc_reliable nonstop_tsc > aperfmperf pni pclmulqdq ssse3 cx16 pcid sse4_1 sse4_2 x2apic popcnt aes > xsave avx hypervisor lahf_lm epb dtherm ida arat pln pts* > *bogomips : 4400.00* > *clflush size : 64* > *cache_alignment : 64* > *address sizes : 40 bits physical, 48 bits virtual* > > I found similar errors related to different systems [1] and similar > problems with rocksdb related to endianness [2], but mine sounds different. > Since the upgrade to newer Flink version atm might be painful, are there > any reason behind this exception, and is a workaround existing? > > Thank you so much, > > Andrea > > [1] - https://communities.ca.com/thread/241773398-em-failed-to-start- > tmplibrocksdbjni8883977260053861907so-failed-to-map-segment- > from-shared-object-operation-not-permitted > > [2] - http://apache-flink-user-mailing-list-archive.2336050. > n4.nabble.com/Unable-to-use-Flink-RocksDB-state-backend- > due-to-endianness-mismatch-td13473.html > > -- > *Andrea Spina* > Software Engineer @ Radicalbit Srl > Via Borsieri 41, 20159, Milano > <https://maps.google.com/?q=Via+Borsieri+41,+20159,+Milano&entry=gmail&source=g> > - IT > > > -- *Andrea Spina* Software Engineer @ Radicalbit Srl Via Borsieri 41, 20159, Milano - IT
