(2.7) dcache-webadmin: change Jetty setting so .war is not unpacked

See http://rt.dcache.org/Ticket/Display.html?id=8489.

When upgrading from 2.6 to 2.10, there is a potential
for the webadmin directory timestamps to be more recent
than the timestamp of the /usr/share/dcache/classes/webapps/webadmin.war
file, which then causes Jetty to ignore the new war
and use the old directory. This subsequently provokes
jndi issues because the new httpd.batch file does not
pass through properties that the webadmin spring file
expects to find in the naming and directory interface.

The simplest solution is to turn off unpacking in
versions subsequent to 2.6.

Note that https://rb.dcache.org/r/7436/ does this for master.

Testing:

Installed 2.6.  Then updated to master (this patch) over it,
leaving the old webadmin directory intact.  Httpd confirmed
to start without issues, navigation through pages is normal.

Target: 2.7
Acked-by: Gerd
Require-book: no
Require-notes: yes

RELEASE NOTES:  The webadmin.war found in /usr/share/dcache/classes/webapps
is no longer unpacked (by default, /var/lib/dcache/httpd).  This
avoids potential conflicts between versions when update installs are run.
...
alarms:  fix regex for checksum alarm

The alarm definition for CHECKSUM uses the regex

Marking (.+) as BROKEN.

Unfortunately this matches both the error emitted by
the ChecksumScanner

 _log.error("Marking {} as BROKEN: {}", id, e.getMessage());

as well as the broken file message from WriteHandleImpl:

 _log.warn("Marking pool entry as BROKEN");

The latter should not produce an alarm.

The regex for the CHECKSUM alarm has been made more specific
in order to exclude matching the latter logging statement.

Note that the changes to alarms in 2.11 render this
patch unnecessary for 2.11 or master.

Target: 2.10
Request: 2.9
Request: 2.8
Reqeust: 2.7
Reqeust: 2.6
Acked-by: Dmitry
Require-notes: no
Require-book: no
Merge pull request #1068 from alrossi/fix/2.7/checksum-regex

alarms:  fix regex for checksum alarm
[maven-release-plugin] prepare release 2.7.23
[maven-release-plugin] prepare for next development iteration
Merge pull request #1031 from alrossi/fix/2.7/war-no-unpack

(2.7) dcache-webadmin: change Jetty setting so .war is not unpacked
[maven-release-plugin] prepare release 2.7.24
[maven-release-plugin] prepare for next development iteration
(2.7) dcache-webadmin: revert rrd data source names

The following releases

2.10.8
2.9.12
2.8.16
2.7.21
2.6.36

introduced improvements to the pool queue plots code
which also unfortunately altered the data source names
(mainly in order to eliminate NaNs from the underlying
store). This results in an incompatibility with
existing .rrd files preventing plot generation (see
the exception trace below).

While the round-robin datastore is transient (the old
default was 15 days of queue information, now changed to 2)
and can be eliminated and then recreated afresh, this
patch restores the old names, so that upgrades from before
these releases to the current will avoid this issue.
It turns out that the storing of NaNs has no impact
on the principal issue the original patch was trying
to address (faulty stacked rendering of histogram bars).

Those who have already moved to the indicated releases
will see the stack trace again and will have
to remove the .rrd files. Those upgrading from
a version prior to those indicated will experience
no such error.

Target: 2.7
Patch: https://rb.dcache.org/r/7434
Acked-by: Tigran
Require-book: no
Require-notes: yes
Committed: 39a601369a9665661fd25d3d5b60222bafb1e4b7

RELEASE NOTES: Those upgrading to

2.10.8
2.9.12
2.8.16
2.7.21
2.6.36

Will experience an error message regarding the pool-queue plots reporting "Unknown datasource name".
The problem can be fixed in the following ways:

1) No upgrade. Do:

dcache stop httpdDomain
rm -f /var/lib/dcache/plots/*.rrd
dcache start httpDomain

2) Upgrade to this release.

If a fix such as 1) was applied, and then an upgrade is done, 1) will have to be reapplied.

Upgrading from a version preceding the listed versions to this one should experience no
such error
pool: Avoid interrupting Berkeley DB in migration module server

Berkeley DB for Java doesn't like thread interrupts, and the pool tries to
never interrupt threads while they update the meta data database. We however
missed at least one case:

17 Nov 2014 11:11:10 (ore_ndgf_org_001) [ore_ndgf_org_002 PoolMigrationCopyReplica 00007D0EC04343684CF6A5F78B289361CD7B] Fault occured in repository: Internal repository error
diskCacheV111.util.CacheException: No transaction is active
        at org.dcache.pool.repository.meta.db.CacheRepositoryEntryImpl.setSticky(CacheRepositoryEntryImpl.java:225) ~[dcache-core-2.10.10.jar:2.10.10]
        at org.dcache.pool.repository.v5.CacheRepositoryV5.setSticky(CacheRepositoryV5.java:890) [dcache-core-2.10.10.jar:2.10.10]
        at org.dcache.pool.repository.v5.CacheRepositoryV5.setSticky(CacheRepositoryV5.java:600) [dcache-core-2.10.10.jar:2.10.10]
        at org.dcache.pool.migration.MigrationModuleServer$Request.run(MigrationModuleServer.java:301) [dcache-core-2.10.10.jar:2.10.10]
        at org.dcache.util.CDCExecutorServiceDecorator$1.run(CDCExecutorServiceDecorator.java:104) [dcache-core-2.10.10.jar:2.10.10]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [na:1.7.0_71]
        at java.util.concurrent.FutureTask.run(FutureTask.java:262) [na:1.7.0_71]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:178) [na:1.7.0_71]
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:292) [na:1.7.0_71]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_71]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_71]
        at java.lang.Thread.run(Thread.java:745) [na:1.7.0_71]

This patch fixes this problem.

Target: trunk
Request: 2.11
Request: 2.10
Request: 2.9
Request: 2.8
Request: 2.7
Request: 2.6
Require-notes: yes
Require-book: no
Acked-by: Paul Millar <paul.millar@desy.de>
Acked-by: Karsten Schwank <karsten.schwank@desy.de>
Patch: https://rb.dcache.org/r/7509/
(cherry picked from commit 19d6b127d170c700f1fd77afdfd65846aab1fc0a)
Merge pull request #1093 from gbehrmann/fix/2.7/rb7509

pool: Avoid interrupting Berkeley DB in migration module server
Merge pull request #1087 from alrossi/fix/2.7/revert-rrd4j-sourcename

(2.7) dcache-webadmin: revert rrd data source names
   imera: protect against NPE in FsSqlDriver#read

    RB: https://rb.dcache.org/r/7385/
    Acked-by: Paul Millar
    Target: trunk
    Request: 2.11 2.10 2.9 2.8 2.7 2.6
(cherry picked from commit f1252364cceec877505eb98a736abcc984bc964e)
Merge pull request #1112 from DmitryLitvintsev/fix/2.7/7385

   imera: protect against NPE in FsSqlDriver#read
[maven-release-plugin] prepare release 2.7.25
[maven-release-plugin] prepare for next development iteration