question Re: Docker Sandbox HDP2.5 memory problem in Archives of Support Questions (Read Only)

Docker Sandbox HDP2.5 memory problem

jknulst — Fri, 23 Sep 2016 05:59:12 GMT

Hi,

I have insufficient memory on my Docker Sandbox. Hiveserver2 can not start because of it:

OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f74b44d3000, 3183083520, 0) failed; error='Cannot allocate memory' (errno=12) # # There is insufficient memory for the Java Runtime Environment to continue. # Native memory allocation (malloc) failed to allocate 3183083520 bytes for committing reserved memory.

I tried allocating 8GB to the container by altering the start_sandbox.sh script:

docker run -v hadoop:/hadoop -m 8G --name sandbox --hostname "sandbox.hortonworks.com" --privileged -d \

But still I have only 2GB in the container:

top - 22:58:30 up 18 min,  2 users,  load average: 0.26, 1.47, 1.25
Tasks:  39 total,   1 running,  38 sleeping,   0 stopped,   0 zombie
Cpu(s):  5.1%us,  3.5%sy,  0.0%ni, 67.8%id, 23.6%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   2047164k total,  1973328k used,    73836k free,      400k buffers
Swap:  4093948k total,  3181344k used,   912604k free,    22904k cached


  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
  608 hdfs      20   0  982m 132m 5372 S 25.0  6.6   0:07.20 java
  606 hdfs      20   0 1022m 146m 5304 S  3.7  7.3   0:12.34 java

How to solve this?

Re: Docker Sandbox HDP2.5 memory problem

jknulst — Fri, 23 Sep 2016 16:39:28 GMT

From the docker docs I get that docker containers must actually be limited to not take all mem available on the host OS. This is confusing.

Re: Docker Sandbox HDP2.5 memory problem

nitinshk77 — Fri, 23 Sep 2016 16:52:30 GMT

How much memory you got on Host machine?

Re: Docker Sandbox HDP2.5 memory problem

nitinshk77 — Fri, 23 Sep 2016 17:13:15 GMT

@Jasper,

You can use,

docker run -v hadoop:/hadoop --memory="8g" --name sandbox --hostname "sandbox.hortonworks.com"--privileged -d \

docker run -v hadoop:/hadoop -m 8g --name sandbox --hostname "sandbox.hortonworks.com"--privileged -d \

Re: Docker Sandbox HDP2.5 memory problem

jknulst — Sun, 25 Sep 2016 21:32:18 GMT

Here is some extra env info:

jknulst$ docker info 
Containers: 1
 Running: 1
 Paused: 0
 Stopped: 0
Images: 1
Server Version: 1.12.1
Storage Driver: aufs
 Root Dir: /var/lib/docker/aufs
 Backing Filesystem: extfs
 Dirs: 10
 Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge null host overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options: seccomp
Kernel Version: 4.4.20-moby
Operating System: Alpine Linux v3.4
OSType: linux
Architecture: x86_64
CPUs: 4
Total Memory: 1.952 GiB
Name: moby
ID: NWBP:4ERH:CUCP:IF5Y:CY23:M2EQ:O7L7:BBPN:A5IA:HWO7:7T3A:OHFP
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): true
 File Descriptors: 23
 Goroutines: 39
 System Time: 2016-09-25T14:27:37.828975604Z
 EventsListeners: 1
No Proxy: *.local, 169.254/16
Registry: https://index.docker.io/v1/
Insecure Registries:
 127.0.0.0/8

Please note the 'Total Memory: 1.952 GiB' this tells me the limit is somewhere on the Docker level, not the container level.

Re: Docker Sandbox HDP2.5 memory problem

jknulst — Sun, 18 Aug 2019 11:14:42 GMT

OK got it now,

The restriction was on the Docker host service level.

Just shift the Memory slider and then you should be fine.