Hi all,
On Karaf 4.3.0 I see the following error logged every few milliseconds:
2021-04-14T08:09:13,749 | ERROR | fileinstall-/[KARAF_HOME]/deploy |
fileinstall | 15 - org.apache.felix.fileinstall - 3.6.8 |
In main loop, we have serious trouble
java.lang.NullPointerException: null
at
org.apache.felix.fileinstall.internal.Scanner.processFiles(Scanner.java:158)
~[!/:3.6.8]
at org.apache.felix.fileinstall.internal.Scanner.scan(Scanner.java:131)
~[!/:3.6.8]
at
org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:311)
[!/:3.6.8]
It looks like this can happen on a system that has too few file handles
configured. The Felix DirectoryWatcher then use a Scanner instead of a
WatcherScanner implementation.
Scanner doesn’t have a null check for the file filter object, and the deploy
fileinstall configuration (org.apache.felix.fileinstall-deploy.cfg) does not
define a filter, giving the NPEs.
It looks like it should also be possible to reproduce this error by configuring
the watcher property felix.fileinstall.disableNio2.
I will look into addressing this by increasing the account’s available file
handles, but I was wondering if there should be additional protection in Karaf
(by setting a filter) or Felix (guarding against the NPE)?
Regards,
GS
This email including any attachments is confidential and may be subject to
legal privilege. Unless otherwise indicated, you may not disclose or distribute
this email to any other person. If you are not the intended recipient of this
email, please delete it and notify the sender immediately.
MUFG Bank, Ltd. (“MUFG Bank”), MUFG Securities EMEA plc ("MUS(EMEA)") and
Mitsubishi UFJ Financial Group, Inc. (“MUFG Inc.”) are members of the MUFG
group.
- MUFG Bank is a limited liability stock company incorporated in Japan
and registered in the Tokyo Legal Affairs Bureau (company no. 0100-01-008846).
MUFG Bank’s head office is at 7-1 Marunouchi 2-Chome, Chiyoda-Ku, Tokyo
100-8388, Japan. MUFG Bank’s London branch is at Ropemaker Place, 25 Ropemaker
Street, London EC2Y 9AN, and is registered as a UK establishment in the UK
register of companies (registered no. BR002013). MUFG Bank is authorised and
regulated by the Japanese Financial Services Agency. MUFG Bank’s London branch
is authorised by the UK Prudential Regulation Authority (“PRA”) and regulated
by the UK Financial Conduct Authority (“FCA”) with limited regulation by the
PRA.
- MUS(EMEA) is a limited liability company registered in England (company
no. 1698498) with its registered office at Ropemaker Place, 25 Ropemaker
Street, London, EC2Y 9AJ. MUS (EMEA) is authorised by the PRA and regulated by
the FCA and PRA in the UK.
- MUFG Inc. is a limited liability stock company incorporated in Japan
and registered in the Tokyo Legal Affairs Bureau (company no. 0100-01-073486).
MUFG Inc.’s head office is at 7-1 Marunouchi 2-Chome, Chiyoda-Ku, Tokyo
100-8388, Japan. MUFG Inc.’s London office is at Ropemaker Place, 25 Ropemaker
Street, London EC2Y 9AN, and is registered as a UK establishment in the UK
register of companies (registered no. BR015994).
Details on how MUFG Bank, London branch and MUS (EMEA) process personal data
relating to individuals associated with our clients are on the MUFG EMEA
website at: https://www.mufgemea.com/governance/privacy-notice/
Unless specifically indicated, this email should not be regarded as an offer,
advice, recommendation, confirmation or valuation in relation to any financial
products or services and any views expressed are those of the author only. If
information in this email constitutes an investment recommendation provided by
MUS(EMEA) as defined in EU (MAR) Regulation 596/2014, additional disclosures
are available at https://research.musi.com/MUFGSecDisclaimers.aspx. Information
in this email may be subject to change without notice. Emails cannot be
guaranteed to be timely, secure or error or virus-free, and members of the MUFG
group accept no liability for such matters. Members of the MUFG group may
record and monitor emails and disclose them where relevant in litigation or to
regulators.
This message has been scanned for malware by Websense. www.websense.com
