Just created a dump, here’s what I see:
"Flink-HistoryServer-ArchiveFetcher-thread-1" #19 daemon prio=5
os_prio=0 tid=0x00007f93a5a2c000 nid=0x5692 runnable [0x00007f934a0d3000]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269)
at
sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86)
- locked <0x00000005df986960> (a sun.nio.ch.Util$2)
- locked <0x00000005df986948> (a
java.util.Collections$UnmodifiableSet)
- locked <0x00000005df928390> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97)
at
org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.select(SocketIOWithTimeout.java:335)
at
org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:157)
at
org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:161)
at
org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.readChannelFully(PacketReceiver.java:258)
at
org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doReadFully(PacketReceiver.java:209)
at
org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.doRead(PacketReceiver.java:171)
at
org.apache.hadoop.hdfs.protocol.datatransfer.PacketReceiver.receiveNextPacket(PacketReceiver.java:102)
at
org.apache.hadoop.hdfs.RemoteBlockReader2.readNextPacket(RemoteBlockReader2.java:201)
at
org.apache.hadoop.hdfs.RemoteBlockReader2.read(RemoteBlockReader2.java:152)
- locked <0x00000005ceade5e0> (a
org.apache.hadoop.hdfs.RemoteBlockReader2)
at
org.apache.hadoop.hdfs.DFSInputStream$ByteArrayStrategy.doRead(DFSInputStream.java:781)
at
org.apache.hadoop.hdfs.DFSInputStream.readBuffer(DFSInputStream.java:837)
- eliminated <0x00000005cead3688> (a
org.apache.hadoop.hdfs.DFSInputStream)
at
org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:897)
- locked <0x00000005cead3688> (a
org.apache.hadoop.hdfs.DFSInputStream)
at
org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:945)
- locked <0x00000005cead3688> (a
org.apache.hadoop.hdfs.DFSInputStream)
at java.io.DataInputStream.read(DataInputStream.java:149)
at
org.apache.flink.runtime.fs.hdfs.HadoopDataInputStream.read(HadoopDataInputStream.java:94)
at java.io.InputStream.read(InputStream.java:101)
at org.apache.flink.util.IOUtils.copyBytes(IOUtils.java:69)
at org.apache.flink.util.IOUtils.copyBytes(IOUtils.java:91)
at
org.apache.flink.runtime.history.FsJobArchivist.getArchivedJsons(FsJobArchivist.java:110)
at
org.apache.flink.runtime.webmonitor.history.HistoryServerArchiveFetcher$JobArchiveFetcherTask.run(HistoryServerArchiveFetcher.java:169)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at
java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
What problems could the flink-shaded-hadoop jar being included introduce?
*// *ah**
*From:*Chesnay Schepler <ches...@apache.org>
*Sent:* Thursday, May 28, 2020 9:26 AM
*To:* Hailu, Andreas [Engineering] <andreas.ha...@ny.email.gs.com>;
user@flink.apache.org
*Subject:* Re: History Server Not Showing Any Jobs - File Not Found?
If it were a class-loading issue I would think that we'd see an
exception of some kind. Maybe double-check that flink-shaded-hadoop is
not in the lib directory. (usually I would ask for the full classpath
that the HS is started with, but as it turns out this isn't getting
logged :( (FLINK-18008))
The fact that overview.json and jobs/overview.json are missing
indicates that something goes wrong directly on startup. What is
supposed to happens is that the HS starts, fetches all currently
available archives and then creates these files.
So it seems like the download gets stuck for some reason.
Can you use jstack to create a thread dump, and see what the
Flink-HistoryServer-ArchiveFetcher is doing?
I will also file a JIRA for adding more logging statements, like when
fetching starts/stops.
On 27/05/2020 20:57, Hailu, Andreas wrote:
Hi Chesney, apologies for not getting back to you sooner here. So
I did what you suggested - I downloaded a few files from my
jobmanager.archive.fs.dir HDFS directory to a locally available
directory named
/local/scratch/hailua_p2epdlsuat/historyserver/archived/. I then
changed my historyserver.archive.fs.dir to
file:///local/scratch/hailua_p2epdlsuat/historyserver/archived/
and that seemed to work. I’m able to see the history of the
applications I downloaded. So this points to a problem with
sourcing the history from HDFS.
Do you think this could be classpath related? This is what we use
for our HADOOP_CLASSPATH var:
//gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop/lib/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-hdfs/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-hdfs/lib/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-mapreduce/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-mapreduce/lib/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-yarn/*:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop-yarn/lib/*:/gns/software/ep/da/dataproc/dataproc-prod/lakeRmProxy.jar:/gns/software/infra/big-data/hadoop/hdp-2.6.5.0/hadoop/bin::/gns/mw/dbclient/postgres/jdbc/pg-jdbc-9.3.v01/postgresql-9.3-1100-jdbc4.jar/
//
You can see we have references to Hadoop mapred/yarn/hdfs libs in
there.
*// *ah
*From:*Chesnay Schepler <ches...@apache.org>
<mailto:ches...@apache.org>
*Sent:* Sunday, May 3, 2020 6:00 PM
*To:* Hailu, Andreas [Engineering] <andreas.ha...@ny.email.gs.com>
<mailto:andreas.ha...@ny.email.gs.com>; user@flink.apache.org
<mailto:user@flink.apache.org>
*Subject:* Re: History Server Not Showing Any Jobs - File Not Found?
yes, exactly; I want to rule out that (somehow) HDFS is the problem.
I couldn't reproduce the issue locally myself so far.
On 01/05/2020 22:31, Hailu, Andreas wrote:
Hi Chesnay, yes – they were created using Flink 1.9.1 as we’ve
only just started to archive them in the past couple weeks.
Could you clarify on how you want to try local filesystem
archives? As in changing jobmanager.archive.fs.dir and
historyserver.web.tmpdir to the same local directory?
*// *ah
*From:*Chesnay Schepler <ches...@apache.org>
<mailto:ches...@apache.org>
*Sent:* Wednesday, April 29, 2020 8:26 AM
*To:* Hailu, Andreas [Engineering]
<andreas.ha...@ny.email.gs.com>
<mailto:andreas.ha...@ny.email.gs.com>; user@flink.apache.org
<mailto:user@flink.apache.org>
*Subject:* Re: History Server Not Showing Any Jobs - File Not
Found?
hmm...let's see if I can reproduce the issue locally.
Are the archives from the same version the history server runs
on? (Which I supposed would be 1.9.1?)
Just for the sake of narrowing things down, it would also be
interesting to check if it works with the archives residing in
the local filesystem.
On 27/04/2020 18:35, Hailu, Andreas wrote:
bash-4.1$ ls -l /local/scratch/flink_historyserver_tmpdir/
total 8
drwxrwxr-x 3 p2epdlsuat p2epdlsuat 4096 Apr 21 10:43
flink-web-history-7fbb97cc-9f38-4844-9bcf-6272fe6828e9
drwxrwxr-x 3 p2epdlsuat p2epdlsuat 4096 Apr 21 10:22
flink-web-history-95b3f928-c60f-4351-9926-766c6ad3ee76
There are just two directories in here. I don’t see cache
directories from my attempts today, which is interesting.
Looking a little deeper into them:
bash-4.1$ ls -lr
/local/scratch/flink_historyserver_tmpdir/flink-web-history-7fbb97cc-9f38-4844-9bcf-6272fe6828e9
total 1756
drwxrwxr-x 2 p2epdlsuat p2epdlsuat 1789952 Apr 21 10:44 jobs
bash-4.1$ ls -lr
/local/scratch/flink_historyserver_tmpdir/flink-web-history-7fbb97cc-9f38-4844-9bcf-6272fe6828e9/jobs
total 0
-rw-rw-r-- 1 p2epdlsuat p2epdlsuat 0 Apr 21 10:43
overview.json
There are indeed archives already in HDFS – I’ve included
some in my initial mail, but here they are again just for
reference:
-bash-4.1$ hdfs dfs -ls /user/p2epda/lake/delp_qa/flink_hs
Found 44282 items
-rw-r----- 3 delp datalake_admin_dev 50569 2020-03-21
23:17
/user/p2epda/lake/delp_qa/flink_hs/000144dba9dc0f235768a46b2f26e936
-rw-r----- 3 delp datalake_admin_dev 49578 2020-03-03
08:45
/user/p2epda/lake/delp_qa/flink_hs/000347625d8128ee3fd0b672018e38a5
-rw-r----- 3 delp datalake_admin_dev 50842 2020-03-24
15:19
/user/p2epda/lake/delp_qa/flink_hs/0004be6ce01ba9677d1eb619ad0fa757
...
*// *ah
*From:*Chesnay Schepler <ches...@apache.org>
<mailto:ches...@apache.org>
*Sent:* Monday, April 27, 2020 10:28 AM
*To:* Hailu, Andreas [Engineering]
<andreas.ha...@ny.email.gs.com>
<mailto:andreas.ha...@ny.email.gs.com>;
user@flink.apache.org <mailto:user@flink.apache.org>
*Subject:* Re: History Server Not Showing Any Jobs - File
Not Found?
If historyserver.web.tmpdir is not set then java.io.tmpdir
is used, so that should be fine.
What are the contents of
/local/scratch/flink_historyserver_tmpdir?
I assume there are already archives in HDFS?
On 27/04/2020 16:02, Hailu, Andreas wrote:
My machine’s /tmp directory is not large enough to
support the archived files, so I changed my
java.io.tmpdir to be in some other location which is
significantly larger. I hadn’t set anything for
historyserver.web.tmpdir, so I suspect it was still
pointing at /tmp. I just tried setting
historyserver.web.tmpdir to the same location as my
java.io.tmpdir location, but I’m afraid I’m still
seeing the following issue:
2020-04-27 09:37:42,904 [nioEventLoopGroup-3-4] DEBUG
HistoryServerStaticFileServerHandler - Unable to load
requested file /overview.json from classloader
2020-04-27 09:37:42,906 [nioEventLoopGroup-3-6] DEBUG
HistoryServerStaticFileServerHandler - Unable to load
requested file /jobs/overview.json from classloader
flink-conf.yaml for reference:
jobmanager.archive.fs.dir:
hdfs:///user/p2epda/lake/delp_qa/flink_hs/
historyserver.archive.fs.dir:
hdfs:///user/p2epda/lake/delp_qa/flink_hs/
historyserver.web.tmpdir:
/local/scratch/flink_historyserver_tmpdir/
Did you have anything else in mind when you said
pointing somewhere funny?
*// *ah
*From:*Chesnay Schepler <ches...@apache.org>
<mailto:ches...@apache.org>
*Sent:* Monday, April 27, 2020 5:56 AM
*To:* Hailu, Andreas [Engineering]
<andreas.ha...@ny.email.gs.com>
<mailto:andreas.ha...@ny.email.gs.com>;
user@flink.apache.org <mailto:user@flink.apache.org>
*Subject:* Re: History Server Not Showing Any Jobs -
File Not Found?
overview.json is a generated file that is placed in
the local directory controlled by
/historyserver.web.tmpdir/.
Have you configured this option to point to some
non-local filesystem? (Or if not, is the
java.io.tmpdir property pointing somewhere funny?)
On 24/04/2020 18:24, Hailu, Andreas wrote:
I’m having a further look at the code in
HistoryServerStaticFileServerHandler - is there an
assumption about where overview.json is supposed
to be located?
*// *ah
*From:*Hailu, Andreas [Engineering]
*Sent:* Wednesday, April 22, 2020 1:32 PM
*To:* 'Chesnay Schepler' <ches...@apache.org>
<mailto:ches...@apache.org>; Hailu, Andreas
[Engineering] <andreas.ha...@ny.email.gs.com>
<mailto:andreas.ha...@ny.email.gs.com>;
user@flink.apache.org <mailto:user@flink.apache.org>
*Subject:* RE: History Server Not Showing Any Jobs
- File Not Found?
Hi Chesnay, thanks for responding. We’re using
Flink 1.9.1. I enabled DEBUG level logging and
this is something relevant I see:
2020-04-22 13:25:52,566
[Flink-HistoryServer-ArchiveFetcher-thread-1]
DEBUG DFSInputStream - Connecting to datanode
10.79.252.101:1019
2020-04-22 13:25:52,567
[Flink-HistoryServer-ArchiveFetcher-thread-1]
DEBUG SaslDataTransferClient - SASL encryption
trust check: localHostTrusted = false,
remoteHostTrusted = false
2020-04-22 13:25:52,567
[Flink-HistoryServer-ArchiveFetcher-thread-1]
DEBUG SaslDataTransferClient - SASL client
skipping handshake in secured configuration with
privileged port for addr = /10.79.252.101,
datanodeId = DatanodeI
nfoWithStorage[10.79.252.101:1019,DS-7f4ec55d-7c5f-4a0e-b817-d9e635480b21,DISK]
*2020-04-22 13:25:52,571
[Flink-HistoryServer-ArchiveFetcher-thread-1]
DEBUG DFSInputStream - DFSInputStream has been
closed already*
*2020-04-22 13:25:52,573 [nioEventLoopGroup-3-6]
DEBUG HistoryServerStaticFileServerHandler -
Unable to load requested file /jobs/overview.json
from classloader*
2020-04-22 13:25:52,576 [IPC Parameter Sending
Thread #0] DEBUG Client$Connection$3 - IPC Client
(1578587450) connection to
d279536-002.dc.gs.com/10.59.61.87:8020 from
d...@gs.com <mailto:d...@gs.com> sending #1391
Aside from that, it looks like a lot of logging
around datanodes and block location metadata. Did
I miss something in my classpath, perhaps? If so,
do you have a suggestion on what I could try?
*// *ah
*From:*Chesnay Schepler <ches...@apache.org
<mailto:ches...@apache.org>>
*Sent:* Wednesday, April 22, 2020 2:16 AM
*To:* Hailu, Andreas [Engineering]
<andreas.ha...@ny.email.gs.com
<mailto:andreas.ha...@ny.email.gs.com>>;
user@flink.apache.org <mailto:user@flink.apache.org>
*Subject:* Re: History Server Not Showing Any Jobs
- File Not Found?
Which Flink version are you using?
Have you checked the history server logs after
enabling debug logging?
On 21/04/2020 17:16, Hailu, Andreas [Engineering]
wrote:
Hi,
I’m trying to set up the History Server, but
none of my applications are showing up in the
Web UI. Looking at the console, I see that all
of the calls to /overview return the following
404 response: {"errors":["File not found."]}.
I’ve set up my configuration as follows:
JobManager Archive directory:
*jobmanager.archive.fs.dir*:
hdfs:///user/p2epda/lake/delp_qa/flink_hs/
-bash-4.1$ hdfs dfs -ls
/user/p2epda/lake/delp_qa/flink_hs
Found 44282 items
-rw-r----- 3 delp datalake_admin_dev
50569 2020-03-21 23:17
/user/p2epda/lake/delp_qa/flink_hs/000144dba9dc0f235768a46b2f26e936
-rw-r----- 3 delp datalake_admin_dev
49578 2020-03-03 08:45
/user/p2epda/lake/delp_qa/flink_hs/000347625d8128ee3fd0b672018e38a5
-rw-r----- 3 delp datalake_admin_dev
50842 2020-03-24 15:19
/user/p2epda/lake/delp_qa/flink_hs/0004be6ce01ba9677d1eb619ad0fa757
...
...
History Server will fetch the archived jobs
from the same location:
*historyserver.archive.fs.dir*:
hdfs:///user/p2epda/lake/delp_qa/flink_hs/
So I’m able to confirm that there are indeed
archived applications that I should be able to
view in the histserver. I’m not able to find
out what file the overview service is looking
for from the repository – any suggestions as
to what I could look into next?
Best,
Andreas
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