#2 - that's great news. I'll try to patch it in and test it out. #1 - In all cases, the backup and restore both appear successful. There are no failure messages for any of the shards, no warnings, etc - I didn't even realize at first that data was missing until I noticed differences in some of the query results when we were testing. Either manual restore of the data or using the restore API (with all data on one node), we see the same, so I think it's more a problem in the backup process than the restore process.
If there's any kind of debugging output we can provide that can help solve this, let me know. -- Steve On Sun, Sep 25, 2016 at 7:17 PM, Hrishikesh Gadre <gadre.s...@gmail.com<mailto:gadre.s...@gmail.com>> wrote: Hi Steve, Regarding the 2nd issue, a JIRA is already created and patch is uploaded (SOLR-9527). Can someone review and commit the patch? Regarding 1st issue, does backup command succeeds? Also do you see any warning/error log messages? How about the restore command? Thanks Hrishikesh On Sat, Sep 24, 2016 at 12:14 PM, Stephen Weiss <steve.we...@wgsn.com<mailto:steve.we...@wgsn.com>> wrote: Hi everyone, We're very excited about SolrCloud's new backup / restore collection APIs, which should introduce some major new efficiencies into our indexing workflow. Unfortunately, we've run into some snags with it that are preventing us from moving into production. I was hoping someone on the list could help. 1) Data inconsistencies There seems to be a problem getting all the data consistently. Sometimes, the backup will contain all of the data in the collection, and sometimes, large portions of the collection (as much as 40%) will be missing. We haven't quite figured out what might cause this yet, although one thing I've noticed is the chances of success are greater when we are only backing up one collection at a time. Unfortunately, for our workflow, it will be difficult to make that work, and there still doesn't seem to be a guarantee of success either way. 2) Shards are not distributed To make matters worse, for some reason, any type of restore operation always seems to put all shards of the collection on the same node. We've tried setting maxShardsPerNode to 1 in the restore command, but this has no effect. We are seeing the same behavior on both 6.1 and 6.2.1. No matter what we do, all the shards always go to the same node - and it's not even the node that we execute the restore request on, but oddly enough, a totally different node, and always the same one (the 4th one). It should be noted that all nodes of our 8 node cloud are up and totally functional when this happens. To work around this, we wrote up a quick script to create an empty collection, which always distributes itself across the cloud quite well (another indication that there's nothing wrong with the nodes themselves), and then we rsync the individual shards' data into the empty shards and reload the collection. This works fine, however, because of the data inconsistencies mentioned above, we can't really move forward anyway. Problem #2, we have a reasonable workaround for, but problem #1 we do not. If anyone has any thoughts about either of these problems, I would be very grateful. Thanks! -- Steve ________________________________ WGSN is a global foresight business. 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WGSN<http://www.wgsn.com/> is part of WGSN Limited, comprising of market-leading products including WGSN.com<http://www.wgsn.com>, WGSN Lifestyle & Interiors<http://www.wgsn.com/en/lifestyle-interiors>, WGSN INstock<http://www.wgsninstock.com/>, WGSN StyleTrial<http://www.wgsn.com/en/styletrial/> and WGSN Mindset<http://www.wgsn.com/en/services/consultancy/>, our bespoke consultancy services. The information in or attached to this email is confidential and may be legally privileged. If you are not the intended recipient of this message, any use, disclosure, copying, distribution or any action taken in reliance on it is prohibited and may be unlawful. If you have received this message in error, please notify the sender immediately by return email and delete this message and any copies from your computer and network. WGSN does not warrant that this email and any attachments are free from viruses and accepts no liability for any loss resulting from infected email transmissions. WGSN reserves the right to monitor all email through its networks. Any views expressed may be those of the originator and not necessarily of WGSN. WGSN is powered by Ascential plc<http://www.ascential.com>, which transforms knowledge businesses to deliver exceptional performance. Please be advised all phone calls may be recorded for training and quality purposes and by accepting and/or making calls from and/or to us you acknowledge and agree to calls being recorded. WGSN Limited, Company number 4858491 registered address: Ascential plc, The Prow, 1 Wilder Walk, London W1B 5AP WGSN Inc., tax ID 04-3851246, registered office c/o National Registered Agents, Inc., 160 Greentree Drive, Suite 101, Dover DE 19904, United States 4C Serviços de Informação Ltda., CNPJ/MF (Taxpayer's Register): 15.536.968/0001-04, Address: Avenida Cidade Jardim, 377, 7˚ andar CEP 01453-000, Itaim Bibi, São Paulo 4C Business Information Consulting (Shanghai) Co., Ltd, 富新商务信息咨询（上海）有限公司, registered address Unit 4810/4811, 48/F Tower 1, Grand Gateway, 1 Hong Qiao Road, Xuhui District, Shanghai
