datadigest | Concise interactive data summaries in R | Data Visualization library
kandi X-RAY | datadigest Summary
kandi X-RAY | datadigest Summary
Concise interactive data summaries in R
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QUESTION
Due to problems might caused by NFS ref, I tried to build iSCSI volume mount in K8S cluster, yet I got errors:
MountVolume.MountDevice failed for volume "iscsipd-rw" : mount failed: exit status 32
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/plugins/kubernetes.io/iscsi/iface-default/192.168.20.100:3260-iqn.2020-09.com.xxxx:yyyy.testtarget-lun-1 --scope -- mount -t ext4 -o defaults /dev/disk/by-path/ip-192.168.20.100:3260-iscsi-iqn.2020-09.com.xxxx:yyyy.testtarget-lun-1 /var/lib/kubelet/plugins/kubernetes.io/iscsi/iface-default/192.168.20.100:3260-iqn.2020-09.com.xxxx:yyyy.testtarget-lun-1
mount: /var/lib/kubelet/plugins/kubernetes.io/iscsi/iface-default/192.168.20.100:3260-iqn.2020-09.com.xxxx:yyyy.testtarget-lun-1: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error.
At beginning I follow this document to create iSCSI initiator, due to errors caused by different situation, I've tried various settings multiple times. iSCSI initiator connection looked well
...ANSWER
Answered 2021-Apr-14 at 05:53problem solved. thanks to [Long Wu Yuan] on Slack#kubernetes-users.
information provided before problem solved:
QUESTION
I'm trying to replicate this hashing code in Python, but both languages handles bytes differently and generating very different outputs.
Can someone guide me here ?
Java Code (Original Code)
...ANSWER
Answered 2020-Mar-07 at 14:38There are the following issues:
The shift operations are wrongly implemented in the Python code:
In the Python code the generated hash is stored in a bytes-like object as a list of unsigned integer values between
0
and255
[1], e.g.0xc8 = 11001000 = 200
. In Java, integers are stored as signed values, whereby the two's complement is used to represent negative numbers [2][3]. The value0x8c
would be interpreted as-56
if stored in abyte
variable.The
>>
-operator produces a different result on the binary level for signed and unsigned values, because it is an arithmetic shift operator which preserves the sign [4][5][6]. Example:
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