All clocks are fine.
Why would time synch would affect whether or not a node appears in the
nodetool status when running the command on a different node? Either
the node is up and visible or not.
From 24 other nodes (including ba-freddy14 itself), it shows in the
status.
For those other 23 nodes AND from the joining node, the one node which
does not show the joining node (ba-freddy03) , is also visible to all
other nodes when running nodetool.
A sample set of nodetool output follows. If you look at the last
status for freddy03 you will see that the joining node (ba-freddy14)
does not appear, but when I started the join, and for the following
20-25 minutes, it DID appear in the status. So I was just asking if
anyone else had experienced this behaviour.
(JOINING NODE) ba-freddy14:nodetool status -r
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN ba-freddy09 591.78 GiB 16 ?
9f7cdc62-2d5c-4d6e-be99-86c577131be5 SSW09
UJ ba-freddy14 117.37 GiB 16 ?
bf85305e-256f-4eb9-9f15-5462f3b369b9 SSW05
UN ba-freddy06 614.26 GiB 16 ?
30d85b23-c66c-4781-86e9-960375caf476 SSW09
UN ba-freddy02 329.26 GiB 16 ?
3388ca94-5db5-4ef6-b7ab-e6fd0485ba49 SSW09
UN ba-freddy12 584.57 GiB 16 ?
80239a34-89cb-459b-a30f-4253bc16ed99 SSW09
UN ba-freddy07 563.51 GiB 16 ?
4de96ef6-bd48-4b16-bee1-05a0a6c9ac72 SSW09
UN ba-freddy01 578.5 GiB 16 ?
86a84980-2f8f-4d23-9099-d4b48ad9d04c SSW09
UN ba-freddy05 575.33 GiB 16 ?
26c03d1b-9022-4e1c-bab4-d0d71bddf645 SSW09
UN ba-freddy10 581.16 GiB 16 ?
7c4051a5-1c77-4713-aa43-561063cedb3a SSW09
UN ba-freddy08 605.92 GiB 16 ?
63fe46d1-c521-4df8-b1bb-ba0136168561 SSW09
UN ba-freddy04 585.65 GiB 16 ?
4503f80a-2890-4a3f-b0cb-d3cedc2b51d2 SSW09
UN ba-freddy11 576.46 GiB 16 ?
b5b368fb-ebe3-4eed-a2a1-404b07ae2b6c SSW09
UN ba-freddy03 568.95 GiB 16 ?
955f21a8-9bc8-4cef-b875-aa4cf7d3294c SSW09
Datacenter: DR1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN dr1-freddy12 453.3 GiB 16 ?
533bb049-c8c9-41d9-8da6-64bdeeb6945d SSW02
UN dr1-freddy08 448.99 GiB 16 ?
6e8c42d2-0f6d-4203-9bf7-5c5fe5e17093 SSW02
UN dr1-freddy07 450.07 GiB 16 ?
4c14b75a-74e8-4518-9c22-053b3a1ad991 SSW02
UN dr1-freddy02 453.69 GiB 16 ?
e68298d7-e5eb-421f-a586-d5ee3c026627 SSW02
UN dr1-freddy10 453.17 GiB 16 ?
998bc6cb-7412-411a-89a6-ef5689d61a4a SSW02
UN dr1-freddy05 463.07 GiB 16 ?
07876bd9-5374-4df8-a480-168b4c06f9f1 SSW02
UN dr1-freddy11 452.7 GiB 16 ?
38fca1c2-59da-4181-93a6-979b937b3fd9 SSW02
UN dr1-freddy03 460.23 GiB 16 ?
a1ab1b4b-ccdc-4cb2-ad59-e9e67f0ddfbb SSW02
UN dr1-freddy04 462.87 GiB 16 ?
29ee0eff-010d-4fbb-b204-095de2225031 SSW02
UN dr1-freddy06 454.26 GiB 16 ?
51467fd3-b795-4ba1-8eec-58b1030cb9c5 SSW02
UN dr1-freddy09 446.01 GiB 16 ?
b071e232-b275-4ce7-809c-7c8fe546fbb4 SSW02
UN dr1-freddy01 450.6 GiB 16 ?
c2340595-c3ec-440c-b978-62f62fd98a9a SSW02
ba-freddy06:nodetool status -r
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN ba-freddy09 591.59 GiB 16 ?
9f7cdc62-2d5c-4d6e-be99-86c577131be5 SSW09
UJ ba-freddy14 117.37 GiB 16 ?
bf85305e-256f-4eb9-9f15-5462f3b369b9 SSW05
UN ba-freddy06 614.12 GiB 16 ?
30d85b23-c66c-4781-86e9-960375caf476 SSW09
UN ba-freddy02 329.03 GiB 16 ?
3388ca94-5db5-4ef6-b7ab-e6fd0485ba49 SSW09
UN ba-freddy12 584.4 GiB 16 ?
80239a34-89cb-459b-a30f-4253bc16ed99 SSW09
UN ba-freddy07 563.36 GiB 16 ?
4de96ef6-bd48-4b16-bee1-05a0a6c9ac72 SSW09
UN ba-freddy01 578.36 GiB 16 ?
86a84980-2f8f-4d23-9099-d4b48ad9d04c SSW09
UN ba-freddy05 575.19 GiB 16 ?
26c03d1b-9022-4e1c-bab4-d0d71bddf645 SSW09
UN ba-freddy10 580.93 GiB 16 ?
7c4051a5-1c77-4713-aa43-561063cedb3a SSW09
UN ba-freddy08 605.79 GiB 16 ?
63fe46d1-c521-4df8-b1bb-ba0136168561 SSW09
UN ba-freddy04 585.5 GiB 16 ?
4503f80a-2890-4a3f-b0cb-d3cedc2b51d2 SSW09
UN ba-freddy11 576.31 GiB 16 ?
b5b368fb-ebe3-4eed-a2a1-404b07ae2b6c SSW09
UN ba-freddy03 568.81 GiB 16 ?
955f21a8-9bc8-4cef-b875-aa4cf7d3294c SSW09
Datacenter: DR1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN dr1-freddy12 453.15 GiB 16 ?
533bb049-c8c9-41d9-8da6-64bdeeb6945d SSW02
UN dr1-freddy08 448.82 GiB 16 ?
6e8c42d2-0f6d-4203-9bf7-5c5fe5e17093 SSW02
UN dr1-freddy07 449.9 GiB 16 ?
4c14b75a-74e8-4518-9c22-053b3a1ad991 SSW02
UN dr1-freddy02 453.45 GiB 16 ?
e68298d7-e5eb-421f-a586-d5ee3c026627 SSW02
UN dr1-freddy10 453.02 GiB 16 ?
998bc6cb-7412-411a-89a6-ef5689d61a4a SSW02
UN dr1-freddy05 462.92 GiB 16 ?
07876bd9-5374-4df8-a480-168b4c06f9f1 SSW02
UN dr1-freddy11 452.55 GiB 16 ?
38fca1c2-59da-4181-93a6-979b937b3fd9 SSW02
UN dr1-freddy03 460.08 GiB 16 ?
a1ab1b4b-ccdc-4cb2-ad59-e9e67f0ddfbb SSW02
UN dr1-freddy04 462.72 GiB 16 ?
29ee0eff-010d-4fbb-b204-095de2225031 SSW02
UN dr1-freddy06 454.11 GiB 16 ?
51467fd3-b795-4ba1-8eec-58b1030cb9c5 SSW02
UN dr1-freddy09 445.78 GiB 16 ?
b071e232-b275-4ce7-809c-7c8fe546fbb4 SSW02
UN dr1-freddy01 450.46 GiB 16 ?
c2340595-c3ec-440c-b978-62f62fd98a9a SSW02
dr1-freddy04: nodetool status -r
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN ba-freddy09 592.05 GiB 16 ?
9f7cdc62-2d5c-4d6e-be99-86c577131be5 SSW09
UJ ba-freddy14 117.37 GiB 16 ?
bf85305e-256f-4eb9-9f15-5462f3b369b9 SSW05
UN ba-freddy06 614.56 GiB 16 ?
30d85b23-c66c-4781-86e9-960375caf476 SSW09
UN ba-freddy02 329.57 GiB 16 ?
3388ca94-5db5-4ef6-b7ab-e6fd0485ba49 SSW09
UN ba-freddy12 584.88 GiB 16 ?
80239a34-89cb-459b-a30f-4253bc16ed99 SSW09
UN ba-freddy07 563.84 GiB 16 ?
4de96ef6-bd48-4b16-bee1-05a0a6c9ac72 SSW09
UN ba-freddy01 578.75 GiB 16 ?
86a84980-2f8f-4d23-9099-d4b48ad9d04c SSW09
UN ba-freddy05 575.54 GiB 16 ?
26c03d1b-9022-4e1c-bab4-d0d71bddf645 SSW09
UN ba-freddy10 581.48 GiB 16 ?
7c4051a5-1c77-4713-aa43-561063cedb3a SSW09
UN ba-freddy08 606.12 GiB 16 ?
63fe46d1-c521-4df8-b1bb-ba0136168561 SSW09
UN ba-freddy04 585.89 GiB 16 ?
4503f80a-2890-4a3f-b0cb-d3cedc2b51d2 SSW09
UN ba-freddy11 576.71 GiB 16 ?
b5b368fb-ebe3-4eed-a2a1-404b07ae2b6c SSW09
UN ba-freddy03 569.22 GiB 16 ?
955f21a8-9bc8-4cef-b875-aa4cf7d3294c SSW09
Datacenter: DR1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN dr1-freddy12 453.6 GiB 16 ?
533bb049-c8c9-41d9-8da6-64bdeeb6945d SSW02
UN dr1-freddy08 449.3 GiB 16 ?
6e8c42d2-0f6d-4203-9bf7-5c5fe5e17093 SSW02
UN dr1-freddy07 450.42 GiB 16 ?
4c14b75a-74e8-4518-9c22-053b3a1ad991 SSW02
UN dr1-freddy02 454.02 GiB 16 ?
e68298d7-e5eb-421f-a586-d5ee3c026627 SSW02
UN dr1-freddy10 453.45 GiB 16 ?
998bc6cb-7412-411a-89a6-ef5689d61a4a SSW02
UN dr1-freddy05 463.36 GiB 16 ?
07876bd9-5374-4df8-a480-168b4c06f9f1 SSW02
UN dr1-freddy11 453.01 GiB 16 ?
38fca1c2-59da-4181-93a6-979b937b3fd9 SSW02
UN dr1-freddy03 460.55 GiB 16 ?
a1ab1b4b-ccdc-4cb2-ad59-e9e67f0ddfbb SSW02
UN dr1-freddy04 463.19 GiB 16 ?
29ee0eff-010d-4fbb-b204-095de2225031 SSW02
UN dr1-freddy06 454.5 GiB 16 ?
51467fd3-b795-4ba1-8eec-58b1030cb9c5 SSW02
UN dr1-freddy09 446.3 GiB 16 ?
b071e232-b275-4ce7-809c-7c8fe546fbb4 SSW02
UN dr1-freddy01 450.79 GiB 16 ?
c2340595-c3ec-440c-b978-62f62fd98a9a SSW02
dr1-freddy11: nodetool status -r
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN ba-freddy09 592.14 GiB 16 ?
9f7cdc62-2d5c-4d6e-be99-86c577131be5 SSW09
UJ ba-freddy14 117.37 GiB 16 ?
bf85305e-256f-4eb9-9f15-5462f3b369b9 SSW05
UN ba-freddy06 614.56 GiB 16 ?
30d85b23-c66c-4781-86e9-960375caf476 SSW09
UN ba-freddy02 329.57 GiB 16 ?
3388ca94-5db5-4ef6-b7ab-e6fd0485ba49 SSW09
UN ba-freddy12 584.88 GiB 16 ?
80239a34-89cb-459b-a30f-4253bc16ed99 SSW09
UN ba-freddy07 563.84 GiB 16 ?
4de96ef6-bd48-4b16-bee1-05a0a6c9ac72 SSW09
UN ba-freddy01 578.75 GiB 16 ?
86a84980-2f8f-4d23-9099-d4b48ad9d04c SSW09
UN ba-freddy05 575.61 GiB 16 ?
26c03d1b-9022-4e1c-bab4-d0d71bddf645 SSW09
UN ba-freddy10 581.48 GiB 16 ?
7c4051a5-1c77-4713-aa43-561063cedb3a SSW09
UN ba-freddy08 606.19 GiB 16 ?
63fe46d1-c521-4df8-b1bb-ba0136168561 SSW09
UN ba-freddy04 585.98 GiB 16 ?
4503f80a-2890-4a3f-b0cb-d3cedc2b51d2 SSW09
UN ba-freddy11 576.77 GiB 16 ?
b5b368fb-ebe3-4eed-a2a1-404b07ae2b6c SSW09
UN ba-freddy03 569.22 GiB 16 ?
955f21a8-9bc8-4cef-b875-aa4cf7d3294c SSW09
Datacenter: DR1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN dr1-freddy12 453.6 GiB 16 ?
533bb049-c8c9-41d9-8da6-64bdeeb6945d SSW02
UN dr1-freddy08 449.3 GiB 16 ?
6e8c42d2-0f6d-4203-9bf7-5c5fe5e17093 SSW02
UN dr1-freddy07 450.42 GiB 16 ?
4c14b75a-74e8-4518-9c22-053b3a1ad991 SSW02
UN dr1-freddy02 454.02 GiB 16 ?
e68298d7-e5eb-421f-a586-d5ee3c026627 SSW02
UN dr1-freddy10 453.45 GiB 16 ?
998bc6cb-7412-411a-89a6-ef5689d61a4a SSW02
UN dr1-freddy05 463.36 GiB 16 ?
07876bd9-5374-4df8-a480-168b4c06f9f1 SSW02
UN dr1-freddy11 453.01 GiB 16 ?
38fca1c2-59da-4181-93a6-979b937b3fd9 SSW02
UN dr1-freddy03 460.55 GiB 16 ?
a1ab1b4b-ccdc-4cb2-ad59-e9e67f0ddfbb SSW02
UN dr1-freddy04 463.19 GiB 16 ?
29ee0eff-010d-4fbb-b204-095de2225031 SSW02
UN dr1-freddy06 454.5 GiB 16 ?
51467fd3-b795-4ba1-8eec-58b1030cb9c5 SSW02
UN dr1-freddy09 446.3 GiB 16 ?
b071e232-b275-4ce7-809c-7c8fe546fbb4 SSW02
UN dr1-freddy01 450.86 GiB 16 ?
c2340595-c3ec-440c-b978-62f62fd98a9a SSW02
ba-freddy03: nodetool status -r
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN ba-freddy09 592.23 GiB 16 ?
9f7cdc62-2d5c-4d6e-be99-86c577131be5 SSW09
UN ba-freddy06 614.63 GiB 16 ?
30d85b23-c66c-4781-86e9-960375caf476 SSW09
UN ba-freddy02 329.66 GiB 16 ?
3388ca94-5db5-4ef6-b7ab-e6fd0485ba49 SSW09
UN ba-freddy12 584.97 GiB 16 ?
80239a34-89cb-459b-a30f-4253bc16ed99 SSW09
UN ba-freddy07 563.91 GiB 16 ?
4de96ef6-bd48-4b16-bee1-05a0a6c9ac72 SSW09
UN ba-freddy01 578.83 GiB 16 ?
86a84980-2f8f-4d23-9099-d4b48ad9d04c SSW09
UN ba-freddy05 575.69 GiB 16 ?
26c03d1b-9022-4e1c-bab4-d0d71bddf645 SSW09
UN ba-freddy10 581.56 GiB 16 ?
7c4051a5-1c77-4713-aa43-561063cedb3a SSW09
UN ba-freddy08 606.27 GiB 16 ?
63fe46d1-c521-4df8-b1bb-ba0136168561 SSW09
UN ba-freddy04 586.05 GiB 16 ?
4503f80a-2890-4a3f-b0cb-d3cedc2b51d2 SSW09
UN ba-freddy11 576.86 GiB 16 ?
b5b368fb-ebe3-4eed-a2a1-404b07ae2b6c SSW09
UN ba-freddy03 569.32 GiB 16 ?
955f21a8-9bc8-4cef-b875-aa4cf7d3294c SSW09
Datacenter: DR1
===============
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
-- Address Load Tokens Owns Host
ID Rack
UN dr1-freddy12 453.68 GiB 16 ?
533bb049-c8c9-41d9-8da6-64bdeeb6945d SSW02
UN dr1-freddy08 449.39 GiB 16 ?
6e8c42d2-0f6d-4203-9bf7-5c5fe5e17093 SSW02
UN dr1-freddy07 450.51 GiB 16 ?
4c14b75a-74e8-4518-9c22-053b3a1ad991 SSW02
UN dr1-freddy02 454.11 GiB 16 ?
e68298d7-e5eb-421f-a586-d5ee3c026627 SSW02
UN dr1-freddy10 453.54 GiB 16 ?
998bc6cb-7412-411a-89a6-ef5689d61a4a SSW02
UN dr1-freddy05 463.44 GiB 16 ?
07876bd9-5374-4df8-a480-168b4c06f9f1 SSW02
UN dr1-freddy11 453.1 GiB 16 ?
38fca1c2-59da-4181-93a6-979b937b3fd9 SSW02
UN dr1-freddy03 460.62 GiB 16 ?
a1ab1b4b-ccdc-4cb2-ad59-e9e67f0ddfbb SSW02
UN dr1-freddy04 463.27 GiB 16 ?
29ee0eff-010d-4fbb-b204-095de2225031 SSW02
UN dr1-freddy06 454.57 GiB 16 ?
51467fd3-b795-4ba1-8eec-58b1030cb9c5 SSW02
UN dr1-freddy09 446.39 GiB 16 ?
b071e232-b275-4ce7-809c-7c8fe546fbb4 SSW02
UN dr1-freddy01 450.94 GiB 16 ?
c2340595-c3ec-440c-b978-62f62fd98a9a SSW02
*From:*Joe Obernberger <joseph.obernber...@gmail.com>
*Sent:* Monday, July 11, 2022 1:29 PM
*To:* user@cassandra.apache.org
*Subject:* Re: Adding nodes
EXTERNAL
I too came from HBase and discovered adding several nodes at a time
doesn't work. Are you absolutely sure that the clocks are in sync
across the nodes? This has bitten me several times.
-Joe
On 7/11/2022 6:23 AM, Bowen Song via user wrote:
You should look for warning and error level logs in the
system.log, not the debug.log or gc.log, and certainly not only
the latest lines.
BTW, you may want to spend some time investigating potential GC
issues based on the GC logs you provided. I can see 1 full GC in
the 3 hours since the node started. It's not necessarily a problem
(if it only occasionally happens during the initial bootstraping
process), but it should justify an investigation if this is the
first time you've seen it.
On 11/07/2022 11:09, Marc Hoppins wrote:
Service still running. No errors showing.
The latest info is in debug.log
DEBUG [Streaming-EventLoop-4-3] 2022-07-11 12:00:38,902
NettyStreamingMessageSender.java:258 - [Stream
#befbc5d0-00e7-11ed-860a-a139feb6a78a channel: 053f2911]
Sending keep-alive
DEBUG [Stream-Deserializer-/10.1.146.174:7000-053f2911]
2022-07-11 12:00:39,790 StreamingInboundHandler.java:179 -
[Stream #befbc5d0-00e7-11ed-860a-a139feb6a78a channel:
053f2911] Received keep-alive
DEBUG [ScheduledTasks:1] 2022-07-11 12:00:44,688
StorageService.java:2398 - Ignoring application state LOAD
from /x.x.x.64:7000 because it is not a member in token metadata
DEBUG [ScheduledTasks:1] 2022-07-11 12:01:44,689
StorageService.java:2398 - Ignoring application state LOAD
from /x.x.x.64:7000 because it is not a member in token metadata
DEBUG [ScheduledTasks:1] 2022-07-11 12:02:44,690
StorageService.java:2398 - Ignoring application state LOAD
from /x.x.x.64:7000 because it is not a member in token metadata
And
gc.log.1.current
2022-07-11T12:08:40.562+0200: 11122.837: [GC (Allocation
Failure) 2022-07-11T12:08:40.562+0200: 11122.838: [ParNew
Desired survivor size 41943040 bytes, new threshold 1 (max 1)
- age 1: 57264 bytes, 57264 total
: 655440K->74K(737280K), 0.0289143 secs]
2575800K->1920436K(8128512K), 0.0291355 secs] [Times:
user=0.23 sys=0.00, real=0.03 secs]
Heap after GC invocations=6532 (full 1):
par new generation total 737280K, used 74K
[0x00000005cae00000, 0x00000005fce00000, 0x00000005fce00000)
eden space 655360K, 0% used [0x00000005cae00000,
0x00000005cae00000, 0x00000005f2e00000)
from space 81920K, 0% used [0x00000005f2e00000,
0x00000005f2e12848, 0x00000005f7e00000)
to space 81920K, 0% used [0x00000005f7e00000,
0x00000005f7e00000, 0x00000005fce00000)
concurrent mark-sweep generation total 7391232K, used 1920362K
[0x00000005fce00000, 0x00000007c0000000, 0x00000007c0000000)
Metaspace used 53255K, capacity 56387K, committed 56416K,
reserved 1097728K
class space used 6926K, capacity 7550K, committed 7576K,
reserved 1048576K
}
2022-07-11T12:08:40.591+0200: 11122.867: Total time for which
application threads were stopped: 0.0309913 seconds, Stopping
threads took: 0.0012599 seconds
{Heap before GC invocations=6532 (full 1):
par new generation total 737280K, used 655434K
[0x00000005cae00000, 0x00000005fce00000, 0x00000005fce00000)
eden space 655360K, 100% used [0x00000005cae00000,
0x00000005f2e00000, 0x00000005f2e00000)
from space 81920K, 0% used [0x00000005f2e00000,
0x00000005f2e12848, 0x00000005f7e00000)
to space 81920K, 0% used [0x00000005f7e00000,
0x00000005f7e00000, 0x00000005fce00000)
concurrent mark-sweep generation total 7391232K, used 1920362K
[0x00000005fce00000, 0x00000007c0000000, 0x00000007c0000000)
Metaspace used 53255K, capacity 56387K, committed
56416K, reserved 1097728K
class space used 6926K, capacity 7550K, committed 7576K,
reserved 1048576K
2022-07-11T12:08:42.163+0200: 11124.438: [GC (Allocation
Failure) 2022-07-11T12:08:42.163+0200: 11124.438: [ParNew
Desired survivor size 41943040 bytes, new threshold 1 (max 1)
- age 1: 54984 bytes, 54984 total
: 655434K->80K(737280K), 0.0291754 secs]
2575796K->1920445K(8128512K), 0.0293884 secs] [Times:
user=0.22 sys=0.00, real=0.03 secs]
*From:*Bowen Song via user <user@cassandra.apache.org>
<mailto:user@cassandra.apache.org>
*Sent:* Monday, July 11, 2022 11:56 AM
*To:* user@cassandra.apache.org <mailto:user@cassandra.apache.org>
*Subject:* Re: Adding nodes
EXTERNAL
Checking on multiple nodes won't help if the joining node
suffers from any of the issues I described, as it will likely
be flipping up and down frequently, and the existing nodes in
the cluster may never reach an agreement before the joining
node stays up (or stays down) for a while. However, it will be
a very strange thing if this is a persistent behaviour. If the
'nodetool status' output on each node remained unchanged for
hours and the outputs aren't the same between nodes, it could
be an indicator of something else that had gone wrong.
Does the strange behaviour goes away after the joining node
completes the streaming and fully joins the cluster?
On 11/07/2022 10:46, Marc Hoppins wrote:
I am beginning to wonder…
If you recall, I stated that I had checked status on a
bunch of other nodes from both datacentres and the joining
node shows up. No errors are occurring anywhere; data is
streaming; node is joining…but, as I also stated, on the
initial node which I only used to run the nodetool status,
the new node is no longer showing up. Thus the new node
has not disappeared from the cluster, only from nodetool
status on that particular node – which is already in the
cluster, has been so for several weeks, and is also
functioning without error.
*From:*Bowen Song via user <user@cassandra.apache.org>
<mailto:user@cassandra.apache.org>
*Sent:* Monday, July 11, 2022 11:40 AM
*To:* user@cassandra.apache.org
<mailto:user@cassandra.apache.org>
*Subject:* Re: Adding nodes
EXTERNAL
A node in joining state can disappearing from the cluster
from other nodes' perspective if the joining node stops
sending/receiving gossip messages to other nodes. This can
happen when the joining node is severely overloaded, has
bad network connectivity or stuck in long STW GC pauses.
Regardless of the reason behind it, the state shown on the
joining node will remain as joining unless the steaming
process has failed.
The node state is propagated between nodes via gossip, and
there may be a delay before all existing nodes agree on
the fact that the joining node is no longer in the
cluster. Within that delay, different nodes in the cluster
may show different results in 'nodetool status'.
You should check the logs on the existing nodes and the
joining node to find out why is it happening, and make
appropriate changes if needed.
On 11/07/2022 09:23, Marc Hoppins wrote:
Further oddities…
I was sitting here watching our new new node being
added (nodetool status being run from one of the seed
nodes) and all was going well. Then I noticed that
our new new node was no longer visible. I checked the
service on the new new node and it was still running.
So I checked status from this node and it shows in the
status report (still UJ and streaming data), but takes
a little longer to get the results than it did when it
was visible from the seed.
I checked status from a few different nodes in both
datacentres (including other seeds) and the new new
node shows up but from the original seed node, it does
not appear in the nodetool status. Can anyone shed any
light on this phenomena?
*From:*Marc Hoppins <marc.hopp...@eset.com>
<mailto:marc.hopp...@eset.com>
*Sent:* Monday, July 11, 2022 10:02 AM
*To:* user@cassandra.apache.org
<mailto:user@cassandra.apache.org>
*Cc:* Bowen Song <bo...@bso.ng> <mailto:bo...@bso.ng>
*Subject:* RE: Adding nodes
Well then…
I left this on Friday (still running) and came back to
it today (Monday) to find the service stopped. So, I
blitzed this node from the ring and began anew with a
different new node.
I rather suspect the problem was with trying to use
Ansible to add these initially - despite the fact that
I had a serial limit of 1 and a pause of 90s for
starting the service on each new node (based on the
time taken when setting up this Cassandra cluster).
So…moving forward…
It is recommended to only add one new node at a time
from what I read. This leads me to:
Although I see the new node LOAD is progressing far
faster than the previous failure, it is still going to
take several hours to move from UJ to UN, which means
I’ll be at this all week for the 12 new nodes. If our
LOAD per node is around 400-600GB, is there any
practical method to speed up adding multiple new nodes
which is unlikely to cause problems? After all, in
the modern world of big (how big is big?) data, 600G
per node is far less than the real BIG big-data.
Marc
*From:*Jeff Jirsa <jji...@gmail.com
<mailto:jji...@gmail.com>>
*Sent:* Friday, July 8, 2022 5:46 PM
*To:* cassandra <user@cassandra.apache.org
<mailto:user@cassandra.apache.org>>
*Cc:* Bowen Song <bo...@bso.ng <mailto:bo...@bso.ng>>
*Subject:* Re: Adding nodes
EXTERNAL
Having a node UJ but not sending/receiving other
streams is an invalid state (unless 4.0 moved the
streaming data out of netstats? I'm not 100% sure, but
I'm 99% sure it should be there).
It likely stopped the bootstrap process long ago with
an error (which you may not have seen), and is running
without being in the ring, but also not trying to join
the ring.
145GB vs 1.1T could be bits vs bytes (that's a factor
of 8), or it could be that you streamed data and
compacted it away. Hard to say, but less important -
the fact that it's UJ but not streaming means there's
a different problem.
If it's me, I do this (not guaranteed to work, your
mileage may vary, etc):
1) Look for errors in the logs of ALL hosts. In the
joining host, look for an exception that stops
bootstrap. In the others, look for messages about
errors streaming, and/or exceptions around file
access. In all of those hosts, check to see if any of
them think they're streaming ( nodetool netstats again)
2) Stop the joining host. It's almost certainly not
going to finish now. Remove data directories,
commitlog directory, saved caches, hints. Wait 2
minutes. Make sure every other host in the cluster
sees it disappear from the ring. Then, start it fresh
and let it bootstrap again. (you could alternatively
try the resumable bootstrap option, but I never use it).
On Fri, Jul 8, 2022 at 2:56 AM Marc Hoppins
<marc.hopp...@eset.com> wrote:
Ifconfig shows RX of 1.1T. This doesn't seem to
fit with the LOAD of 145GiB (nodetool status),
unless I am reading that wrong...and the fact that
this node still has a status of UJ.
Netstats on this node shows (other than :
Read Repair Statistics:
Attempted: 0
Mismatch (Blocking): 0
Mismatch (Background): 0
Pool Name Active Pending
Completed Dropped
Large messages n/a 0
0 0
Small messages n/a 53
569755545 15740262
Gossip messages n/a 0
288878 2
None of this addresses the issue of not being able
to add more nodes.
-----Original Message-----
From: Bowen Song via user <user@cassandra.apache.org>
Sent: Friday, July 8, 2022 11:47 AM
To: user@cassandra.apache.org
Subject: Re: Adding nodes
EXTERNAL
I would assume that's 85 GB (i.e. gigabytes) then.
Which is approximately 79 GiB (i.e. gibibytes).
This still sounds awfully slow - less than 1MB/s
over a full day (24 hours).
You said CPU and network aren't the bottleneck.
Have you checked the disk IO? Also, be mindful
with CPU usage. It can still be a bottleneck if
one thread uses 100% of a CPU core while all other
cores are idle.
On 08/07/2022 07:09, Marc Hoppins wrote:
> Thank you for pointing that out.
>
> 85
gigabytes/gibibytes/GIGABYTES/GIBIBYTES/whatever
name you care to
> give it
>
> CPU and bandwidth are not the problem.
>
> Version 4.0.3 but, as I stated, all nodes use
the same version so the version is not important
either.
>
> Existing nodes have 350-400+(choose whatever you
want to call a
> gigabyte)
>
> The problem appears to be that adding new nodes
is a serial process, which is fine when there is
no data and each node is added within 2minutes.
It is hardly practical in production.
>
> -----Original Message-----
> From: Bowen Song via user
<user@cassandra.apache.org>
> Sent: Thursday, July 7, 2022 8:43 PM
> To: user@cassandra.apache.org
> Subject: Re: Adding nodes
>
> EXTERNAL
>
>
> 86Gb (that's gigabits, which is 10.75GB,
gigabytes) took an entire day seems obviously too
long. I would check the network bandwidth, disk IO
and CPU usage and find out what is the bottleneck.
>
> On 07/07/2022 15:48, Marc Hoppins wrote:
>> Hi all,
>>
>> Cluster of 2 DC and 24 nodes
>>
>> DC1 (RF3) = 12 nodes, 16 tokens each
>> DC2 (RF3) = 12 nodes, 16 tokens each
>>
>> Adding 12 more nodes to DC1: I installed
Cassandra (version is the same across all nodes)
but, after the first node added, I couldn't seem
to add any further nodes.
>>
>> I check nodetool status and the newly added
node is UJ. It remains this way all day and only
86Gb of data is added to the node over the entire
day (probably not yet complete). This seems a
little slow and, more than a little inconvenient
to only be able to add one node at a time - or at
least one node every 2 minutes. When the cluster
was created, I timed each node from service start
to status UJ (having a UUID) and it was around 120
seconds. Of course there was no data.
>>
>> Is it possible I have some setting not
correctly tuned?
>>
>> Thanks
>>
>> Marc
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